Lo-Pro的《Fuel》 歌词

would have been 改为 would be

错误的地方比较多。首先，字符串的存储一个汉字要占两个字节的位置，所以两个汉字就要用了4个字节，另外再加上一个字符串的结束服务，表示两个字的姓名，就需要至少需要五个字符。另外，比较致富串是否相等，应该要使用头文件string.h。下面比较字符串是否相等，要使用其中的字符串比较函数strcmp。具体的程序已经修改完成，并且运行测试通过。#include#include main(){ int i,k; char j[5]; //两个汉字至少要5，三个汉字至少要7 struct person { int votes; char j[5]; } zhang= {0,"张三"},zhao= {0,"赵六"},wang= {0,"王二"},li= {0,"李四"},liu= {0,"刘五"}; for(i=1;; i++) { printf("请输入支持人的姓名，结束请输入## "); scanf("%s",j); if(strcmp(j,zhang.j)==0) zhang.votes++; if(strcmp(j,wang.j)==0) wang.votes++; if(strcmp(j,zhao.j)==0) zhao.votes++; if(strcmp(j,liu.j)==0) liu.votes++; if(strcmp(j,li.j)==0) li.votes++; if(strcmp(j,"##")==0) { break; } } printf("1 %s %d ",zhang.j,zhang.votes); printf("2 %s %d ",wang.j,wang.votes); printf("3 %s %d ",zhao.j,zhao.votes); printf("4 %s %d ",liu.j,liu.votes); printf("5 %s %d ",li.j,li.votes);}

import java.io.BufferedReader;import java.io.InputStreamReader;public class Vote {public static void main(String args[]) {try {String[] persons = new String[]{"1","2","3"};Integer[] votes = new Integer[]{0,0,0};BufferedReader sin = new BufferedReader(new InputStreamReader(System.in));String readline;System.out.println("================投票开始===============");System.out.println("请按1，2，3投票，Enter确认");System.out.println("按0-->Enter结束投票，公布结果 ");readline = sin.readLine(); // 从系统标准输入读入一字符串while (!readline.equals("0")) {String voteStr = readline;if(persons[0].equals(voteStr)){votes[0] +=1;}else if(persons[1].equals(voteStr)){votes[1] +=1;}else if(persons[2].equals(voteStr)){votes[2] +=1;}else{System.out.println("无效的投票!");}readline = sin.readLine(); // 从系统标准输入读入一字符串} // 继续循环System.out.println("================投票结束===============");System.out.println("================结果公布===============");System.out.println(persons[0]+"================"+persons[1]+"==============="+persons[2]);System.out.println(votes[0]+"================"+votes[1]+"==============="+votes[2]);} catch (Exception e) {System.out.println("Error" + e); // 出错，则打印出错信息}}}

strcmp是c的库函数，功能是把()中的形参指针指向的字符串比较一下，按对应字符的ascii码大小确定返回值：前者大于后者时返回1，相等时返回0，前者小于后者时返回-1。strcmp(name,eng[i].name)的意思就是比较name和eng[i].name指向的字符串谁大谁小或相等。

We will pick out ten lucky audiences and then initiate a vote among them, the two lucky audiences with highest votes would be the winners.

对，1L说了。

简单的说imdb更具有客观性，豆瓣更适合国人的口味，时光网评分普遍偏高不具有参考价值。我觉得这么问，目的在于这个评分是否对于我们有参考价值，是否能影响我们买票走进电影院，所以我觉得需要从几个方面来看待这个问题。首先，votes。imdb分数并不能完全反映电影的水平，同时需要考虑vote数，比如＞1000 votes或者＞2000 votes。有些片分高，但是votes数很少，这样就没有参考价值，一般超过1w的votes就能正确反映片子的水平了。这个到豆瓣上同样适用，基数越大，分数越具有参考价值。另外亚洲的片子在imdb上普遍votes太少，基本上不具有参考价值，亚洲的电影还是参考国内的评分比较好。其次，地域文化差异的问题。众所周知，由于天朝的GFW，国内用户是没办法直接访问imdb的，需要翻墙或者把域名改成ip地址。因此imdb的评分大部分只代表了欧美用户的口味，并不一定适合于国人的口味。有很多片子在国外评价很差票房很烂，国内引进却能获得不错的票房和口碑。上段说到亚洲电影普通votes太少，也是欧美大众很少有机会接触到亚洲的电影，华语电影就更难了，很多日韩港片几乎没有imdb链接，因此这些imdb的评分完全不具有参考价值。再次，评分机制。imdb的评分是可以选1--10分的，而豆瓣只能选1到5星，这种差异也会造成不同分数的差异，比如我在imdb上很少给片子10分的，因为我认为很少有一部电影能够达到10分，往往很不错的我就给9分了，而在豆瓣上5星表示力荐，9分的电影我觉得已经足够力荐所以我当然会给5星。这也是分数有差别的一个原因。普遍来说，一部公认的好片在豆瓣上分还是会高一点的。次次，在imdb上，会有刷分的问题。就是说top50，top10的电影是相对固定的，每年顶多1到2部电影能进入到top50里面，而top10的电影也是有一批固定的粉丝的，他们对于自己喜欢的电影是无法忍受被其他新进来的电影刷下去的。比如当初TDK被粉丝们刷到TOP1的时候，肖申克救赎的影迷和教父的影迷就无法忍受了，于是刷分就开始，把后两部评分往上刷把TDK往下刷，最终TDK的评分在8.9，No.8。所以一般一部电影上映之后1年分数和排名才会较为稳定。最后，说到底电影的评价完全在个人。一百个人眼中有一百个哈姆雷特，这和你自己的口味以及人生阅历是有关系的，分数只是一个简单的参考，只是影响你买票走进电影院的一个因素而已。很多动作片分不高6分，但是也可以一看；有些文艺片7分，也不一定看的很舒服；有些片快8分了你也不一定能看懂。也有很多人看片只要是大片就看，也有人只要有自己喜欢的明星就行，也有人只喜欢看某种类型的片。当然，如果你只是一位为了没事放松自己进电影院看一部电影的话，我觉得你可以综合imdb和豆瓣的评分来决定是否要买票进入电影院。

basketballplayer

有一个不同的问题有关的现任署长提名谁不能赢得选举。根据所谓的缓缴规则，失去现任署长提名继续担任董事职位，直至取代，除非这类现任董事辞职。因此，实施多数表决将影响甚微，没有变更为缓缴规则。但是， 简单地消除缓缴规则将导致在该问题上面列出。 累积投票应有别于多元性和多数表决。而多元性和多数表决涉及到的门槛要求，为打赢主任选举，累积投票涉及到的选票数目1 股东可投在选举中。与累积投票，每一股进行很多票由于有空缺有待填补，和股东可能会分发选票，为所有该等股份之间的主任被提名人以任何方式想要的。 累积投票是普遍旨在促进少数股东的影响力，在这方面的大股东或股东集团是不放心，能够填补每名董事席位与自己的提名。某些倡议者大多数投票的标准认为应该有一个雕刻出-让多数投票-公司有累积投票。 累积投票制是不是一个新概念，在美国。累积投票长期以来一直使用的美国的公司，以此确保少数股东权益是听取和代表嘿嘿！电脑翻译的 不太准确

js可这样判断是否选中$(".votesubject").find("input").each(function () {if ($(this).prop("checked", true)) {alert($(this).prop("value"))}}); 也可这样$("input[name=votetitle]").each(function () {//if (this.checked) {// alert($(this).val());//} var radios = $(this); for (i = 0; i < radios.length; i++) {if (radios[i].checked) { votenum = parseInt(radios[i].value)+1; votes += votenum + "@"; ids+=$(this).attr("id")+"@"ischeck = false;}}}); 我需要的功能js方法：$(window).ready(function () { $("#tj").click(function () { //$(".votesubject").find("input").each(function () { // if ($(this).prop("checked", true)) { // alert($(this).prop("value")) // } // }); var ids = ""; var votes = ""; var votenum; var ischeck = true; $("input[name=votetitle]").each(function () { //if (this.checked) { // alert($(this).val()); //} var radios = $(this); for (i = 0; i < radios.length; i++) { if (radios[i].checked) { votenum = parseInt(radios[i].value)+1; votes += votenum + "@"; ids+=$(this).attr("id")+"@" ischeck = false; } } }); if (ischeck) { alert("请勾选选项后再进行提交"); return false; } if (!ischeck) { if (ids.length > 1) { ids = ids.substring(0, ids.length - 1); } if (votes.length > 1) { votes = votes.substring(0, votes.length - 1); } $("#votenum").val(votes); $("#ids").val(ids); alert("感谢您的参与。"); $("#form1").submit(); } }); $("#ck").click(function () { window.location = "voteview?cid= " + $("#classid").val() + "&id=" + $("#vid").val() + " "; });});附上相关选中的写法 $("[name="checkbox"]").attr("checked",true);//全选 $("[name="checkbox"]").removeAttr("checked");//取消全选 $("#checkbox").attr("checked"); 返回的是checked或者是undefined解决办法 JQ1.6之后，可以通过attr方法去获得属性，通过prop方法去获得特性 $("#cb").attr("tagName"); //undefined $("#cb").prop("tagName"); //INPUT

1楼已经很详细了~

var votes = (from v in db.VoteItem where v.TitleID == （Int32）Parse(Request.QueryString["titleid"].ToString()) select v.ItemCount).Sum();

The outcome of the election was announce before all of the votes had been counted.这里announce是名词， before all the votes是announce的介词短语做定语，修饰名词announce。announce before all of the votes had been counted.是一个完整的表语从句。

What is "Statutory Voting"Statutory voting is a corporate voting procedure in which each shareholder is entitled to one vote per share and votes must be divided evenly among the candidates or issues being voted on. Statutory voting, sometimes known as straight voting, is one of two stockholder voting procedures and the more common option. In statutory voting, if you owned 50 shares and were voting on six board positions, you could cast 50 votes for each board member, for a total of 300 votes. You could not cast 20 votes for each of five board members and 200 for the sixth.

"我已经投票了"英语怎么翻译 我已经投票了 I have already voted 投票给我 英语怎么说 1 Remember to vote for me 2 I remember to cast 5 votes/Please remember to vote for him 3 I need 5 tickets, can monitor the election 4 Do you know how many people voted for you? 5 Have you got how many tickets? 6 Y耽u cannot vote。 下面的以后的明天或后天 投票英语怎么说 vote 投票数用英语怎么说 Votes 投票用英语怎么说 投票这个词语属于一般现在时，应该是：voteding “投票”的英文怎么写？ vote 投票赞成某人 / 投票 反对某人 英语 1 支持和反对 支持support; stand by 反对opposite 投票支持xx: vote for xx 投票反对xx: vote against xx 2 我属虎 I was born in the year of tiger. I was born in the tiger year in China. I was born in xx俯x, it was a tiger year in Chinese horoscope. horoscope 星相学 希望回答对你有帮助

1， 4000x30%=1200 votes (票）2，20%未决定的人，即有：4000x20%=800 votes3，这800人中，按3：5分配，即：8分之3投给A，8分之5投给B4， 所以投给A的就是：800x3/8=300 votes3，所以A得最后得票是：1200+300=1500 votes答案是：B

imdb就是环球电影数据库的英文首字母缩写www.imdb.com就是它的官方网站，如果英文还可以的话，可以自己去看看

应该选择B,因为前面的先行词被every所修饰，所以主语应该被看作是第三人称单数

除了第一部和同胞是连得可以看，其余的劝你别看很恶心，粗制滥造的山寨版

Britain Enters Final Day of Campaigning Before ElectionsBritain"s top party leaders are taking full advantage of their last day of campaigning before Britons go to the polls. Late Wednesday night, Labor leader Gordon Brown visited steel workers on an overnight shift. "I don"t need to tell you that this election is about the future," said Brown. "It"s about the future of our industry, the future of our jobs, the future of our young people." Mr. Brown is facing a tight election. The Conservative Party, led by David Cameron, has topped the latest opinion polls. And, the Liberal Democrats -- traditionally a marginalized party in what has largely been a two-party system -- are scoring high in opinion polls.Rodney Barker is a political academic and professor at the London School of Economics. "The three candidates have been up to making themselves as busy as possible," explained Barker. "David Cameron, the Conservative leader, so visible that he"s even worked through the night -- he hasn"t slept."Barker says this last day of campaigning is crucial, because so many Britons still have not made up their mind. A survey published by the research group ComRes Tuesday said 2.5 million people who say they are certain to vote say they are still undecided who to vote for and more than a third of voters said it was "quite possible" they would change their mind on who to vote for by the time the polls open Thursday morning. Rodney Barker says it is all up in the air."The one thing which one can say about this election -- and we haven"t been able to say this for any election within living memory -- is that the only certain thing is that we cannot predict the outcome, even on the day before the poll," added Barker.The ComRes poll shows the Conservatives winning 37 percent of votes, Labor on 29 percent and the Liberal Democrats on 26 percent.With the votes split this way, no single party would win a majority of seats in parliament. In that case, the shape of Britain"s future government will depend on coalitions. The balance is likely to be tipped by the Liberal Democrats, but so far their leader, Nick Clegg, has refused to say whether his party would side with the Conservatives or Labor. Barker says what this means is that it could be weeks before the composition of Britain"s future government becomes clear. "Even when we know the result of the election, we may not know what the result is in terms of government -- who will successfully make a deal with who to make what sort of government," noted Barker.If no single party is able to win a majority of parliament seats, current Prime Minister Gordon Brown would have the right to stay in office until a new government can be formed.

答案A 试题分析：短语辨析。A支持，赞成；B回应；C纪念…；D关于；句意：他在会议上提出的建议有16票支持，15票反对。故A正确。 考点：考查短语辨析。 点评：本题的短语都是与介词In连用的，要在上下文语境中加以辨析，在平时加强识记。 查看原帖>>

We must accept finite disappointment, but we must never lose infinite hope.

the most

意为：国会议员都不敢支持废奴议案唯恐失去选票。lest为唯恐、以免、担心。选because意思就不对了。

剧情不错 我也想看看那个说致命游戏 我看过的一个叫致命游戏的怎么不是这剧情啊 我看致命游戏是 角色在游戏中怎么牺牲的 现实中也那么牺牲

IMDB 基于网友的个性海量评分，其核心排名算法如下：　The formula for calculating the Top Rated 250 Titles gives a true Bayesian estimate: 　　weighted rating (WR) = (v ÷ (v+m)) × R + (m ÷ (v+m)) × C 　　 　　where: 　　R = average for the movie (mean) = (Rating) 　　v = number of votes for the movie = (votes) 　　m = minimum votes required to be listed in the Top 250 (currently 3000) 　　C = the mean vote across the whole report (currently 6.9) 　　 　　for the Top 250, only votes from regular voters are considered.http://movie.douban.com/doulist/1518184/如果有兴趣可收藏此豆列，录有最新的IMDB TOP250

环球电影资料库里有,几乎所有的电影资料都能在上面找到.也有IMDB排名.参考资料：http://www.mov6.com/IMDB评分方法IMDB是目前全球互联网中最大的一个电影资料库，里面包括了几乎所有的电影，以及1982年以后的电视剧集。IMDB的资料中包括了影片的众多信息，演员，片长，内容介绍，分级，评论等，就个人买碟而言，很大程度上也是参考IMDB的得分。而IMDB的得分又是如何来的呢？它的可靠性又有多少呢？让我们通过《魔戒1：护戒使者》来做具体分析吧，先看上图：这张图就是魔戒1的所有评分者的分数的一个条状统计图。从中我们可以看到各个分数段的大致比例，比如这儿就可以发现，超过一半的人是打满分的。根据IMDB网站上公布的TOP250评分标准：imdb top 250用的是贝叶斯统计的算法得出的加权分(Weighted Rank-WR)，公式如下：weighted rank (WR) = (v ÷ (v+m)) × R + (m ÷ (v+m)) × C其中：R = average for the movie (mean) = (Rating)（是用普通的方法计算出的平均分）v = number of votes for the movie = (votes)（投票人数，需要注意的是，只有经常投票者才会被计算在内，这个下面详细解释）m = minimum votes required to be listed in the top 250 (currently 1250)（进入imdb top 250需要的最小票数，只有三两个人投票的电影就算得满分也没用的）C = the mean vote across the whole report (currently 6.9)（目前所有电影的平均得分）另外重点来了，根据这个注释：note: for this top 250， only votes from regular voters are considered.只有‘regular voters‘的投票才会被计算在IMDB top 250之内，这就是IMDB防御因为某种电影的fans拉票而影响 top 250结果，把top 250尽量限制在资深影迷投票范围内的主要方法。regular voter的标准不详，估计至少是“投票电影超过xxx 部以上”这样的水平，搞不好还会加上投票的时间分布，为支持自己的心爱电影一天内给N百部电影投票估计也不行。因此，细心的人可以注意到，列入IMDB top 250的电影，其主页面上的分数与250列表中的分数是不同的。以魔戒1为例，它在自己的页面[url]http://www.imdb.com/title/tt0120737/[/url]中的分数是8.8，而列表中是8.7。一般 250表中的得分都会低于自己页面中的得分，越是娱乐片差距越大。这大概是因为regular voter对于电影的要求通常较高的关系。

水军多吧

JAMES NBA regular season MVP awardThe NBA regular season individual awards season, the highest honor - the most valuable player (MVP) yesterday go in the "Little Emperor" James name. In this way, the Cavaliers headed into NBA players in the history of the tenth player award in consecutive seasons. Earlier in the award selection, a total of nine players for two consecutive seasons was crowned the regular season MVP. They are superstars Russell, Wilt Chamberlain, Kareem Abdul-Jabbar, Malone, Bird, "Magic" Johnson, Michael Jordan, Tim Duncan and Steve Nash, of which Russell, Chamberlain and Bird superior, had three consecutive seasons of "value the highest. " The same day, James"s University in his hometown of Akron received the blessing of more than 3000 fans. Career when he won the second MVP trophy, the right high school teammates, coaches and his mother, thanked his girlfriend, and finally he invited, including O"Neill, Williams and other Cavaliers teammates came to power, and his share the joy of winning. "My name can be carved on this trophy," James said, "but they paid a lot of teammates." In this season"s regular season, James field team contributions are 29.7 points, 7.3 rebounds, 8.6 assists. In the James led the Cavaliers in the record, following last season ranked full league standings after the first, with 61 wins this season ranks all 21 league negative to the first. James made the selection in a landslide victory, winning total of 123 media workers from the United States and Canada and 116 in the hands of global fans first-place votes, total points over 1205 points. The poll is the second integral thunder team Durant (4 first-place votes), while the Lakers Kobe Bryant points came in third, but he did not get a first-place votes the judges. Orlando ranked fourth star Howard scored three first-place votes. MVP Award this season, a step towards innovation - the first time fans can be voted MVP. Web site by logging NBA fans, selected from five candidates for their own favorite MVP. However, the sum of all the fans to vote the final vote only in the official vote count a ballot paper. Not surprisingly, James has also gained fans to vote first 中文 来源：新华社

选D，意思是他们是除我之外唯一得到选票的人。

很简单：Had Paul received six more votes in the last election,he would be our chairman now.后一个从句指现在,所以虚拟语气只能用would be,而不是用于过去时的would have been.保证答案正确,请及时采纳.祝学习...

1. 创建项目运行下面命令就可以创建一个 django 项目，项目名称叫 mysite ：$ django-admin.py startproject mysite创建后的项目目录如下：mysite├── manage.py└── mysite ├── __init__.py ├── settings.py ├── urls.py └── wsgi.py1 directory, 5 files说明：__init__.py ：让 Python 把该目录当成一个开发包 (即一组模块)所需的文件。 这是一个空文件，一般你不需要修改它。manage.py ：一种命令行工具，允许你以多种方式与该 Django 项目进行交互。 键入python manage.py help，看一下它能做什么。 你应当不需要编辑这个文件；在这个目录下生成它纯是为了方便。settings.py ：该 Django 项目的设置或配置。urls.py：Django项目的URL路由设置。目前，它是空的。wsgi.py：WSGI web 应用服务器的配置文件。更多细节，查看 How to deploy with WSGI接下来，你可以修改 settings.py 文件，例如：修改 LANGUAGE_CODE、设置时区 TIME_ZONESITE_ID = 1LANGUAGE_CODE = "zh_CN"TIME_ZONE = "Asia/Shanghai"USE_TZ = True 上面开启了 [Time zone]() 特性，需要安装 pytz：$ sudo pip install pytz2. 运行项目在运行项目之前，我们需要创建数据库和表结构，这里我使用的默认数据库：$ python manage.py migrateOperations to perform: Apply all migrations: admin, contenttypes, auth, sessionsRunning migrations: Applying contenttypes.0001_initial... OK Applying auth.0001_initial... OK Applying admin.0001_initial... OK Applying sessions.0001_initial... OK然后启动服务：$ python manage.py runserver你会看到下面的输出：Performing system checks...System check identified no issues (0 silenced).January 28, 2015 - 02:08:33Django version 1.7.1, using settings "mysite.settings"Starting development server at Quit the server with CONTROL-C.这将会在端口8000启动一个本地服务器, 并且只能从你的这台电脑连接和访问。 既然服务器已经运行起来了，现在用网页浏览器访问 。你应该可以看到一个令人赏心悦目的淡蓝色 Django 欢迎页面它开始工作了。你也可以指定启动端口:$ python manage.py runserver 8080以及指定 ip：$ python manage.py runserver 0.0.0.0:80003. 创建 app前面创建了一个项目并且成功运行，现在来创建一个 app，一个 app 相当于项目的一个子模块。在项目目录下创建一个 app：$ python manage.py startapp polls如果操作成功，你会在 mysite 文件夹下看到已经多了一个叫 polls 的文件夹，目录结构如下：polls├── __init__.py├── admin.py├── migrations│ └── __init__.py├── models.py├── tests.py└── views.py1 directory, 6 files4. 创建模型每一个 Django Model 都继承自 django.db.models.Model在 Model 当中每一个属性 attribute 都代表一个 database field通过 Django Model API 可以执行数据库的增删改查, 而不需要写一些数据库的查询语句打开 polls 文件夹下的 models.py 文件。创建两个模型：import datetimefrom django.db import modelsfrom django.utils import timezoneclass Question(models.Model): question_text = models.CharField(max_length=200) pub_date = models.DateTimeField("date published") def was_published_recently(self): return self.pub_date >= timezone.now() - datetime.timedelta(days=1)class Choice(models.Model): question = models.ForeignKey(Question) choice_text = models.CharField(max_length=200) votes = models.IntegerField(default=0)然后在 mysite/settings.py 中修改 INSTALLED_APPS 添加 polls：INSTALLED_APPS = ( "django.contrib.admin", "django.contrib.auth", "django.contrib.contenttypes", "django.contrib.sessions", "django.contrib.messages", "django.contrib.staticfiles", "polls",)在添加了新的 app 之后，我们需要运行下面命令告诉 Django 你的模型做了改变，需要迁移数据库：$ python manage.py makemigrations polls你会看到下面的输出日志：Migrations for "polls": 0001_initial.py: - Create model Choice - Create model Question - Add field question to choice你可以从 polls/migrations/0001_initial.py 查看迁移语句。运行下面语句，你可以查看迁移的 sql 语句：$ python manage.py sqlmigrate polls 0001输出结果：BEGIN;CREATE TABLE "polls_choice" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "choice_text" varchar(200) NOT NULL, "votes" integer NOT NULL);CREATE TABLE "polls_question" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "question_text" varchar(200) NOT NULL, "pub_date" datetime NOT NULL);CREATE TABLE "polls_choice__new" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "choice_text" varchar(200) NOT NULL, "votes" integer NOT NULL, "question_id" integer NOT NULL REFERENCES "polls_question" ("id"));INSERT INTO "polls_choice__new" ("choice_text", "votes", "id") SELECT "choice_text", "votes", "id" FROM "polls_choice";DROP TABLE "polls_choice";ALTER TABLE "polls_choice__new" RENAME TO "polls_choice";CREATE INDEX polls_choice_7aa0f6ee ON "polls_choice" ("question_id");COMMIT;你可以运行下面命令，来检查数据库是否有问题：$ python manage.py check再次运行下面的命令，来创建新添加的模型：$ python manage.py migrateOperations to perform: Apply all migrations: admin, contenttypes, polls, auth, sessionsRunning migrations: Applying polls.0001_initial... OK总结一下，当修改一个模型时，需要做以下几个步骤：修改 models.py 文件运行 python manage.py makemigrations 创建迁移语句运行 python manage.py migrate，将模型的改变迁移到数据库中你可以阅读 django-admin.py documentation，查看更多 manage.py 的用法。创建了模型之后，我们可以通过 Django 提供的 API 来做测试。运行下面命令可以进入到 python shell 的交互模式：$ python manage.py shell下面是一些测试：>>> from polls.models import Question, Choice # Import the model classes we just wrote.# No questions are in the system yet.>>> Question.objects.all()[]# Create a new Question.# Support for time zones is enabled in the default settings file, so# Django expects a datetime with tzinfo for pub_date. Use timezone.now()# instead of datetime.datetime.now() and it will do the right thing.>>> from django.utils import timezone>>> q = Question(question_text="What"s new?", pub_date=timezone.now())# Save the object into the database. You have to call save() explicitly.>>> q.save()# Now it has an ID. Note that this might say "1L" instead of "1", depending# on which database you"re using. That"s no biggie; it just means your# database backend prefers to return integers as Python long integer# objects.>>> q.id1# Access model field values via Python attributes.>>> q.question_text"What"s new?">>> q.pub_datedatetime.datetime(2012, 2, 26, 13, 0, 0, 775217, tzinfo=<UTC>)# Change values by changing the attributes, then calling save().>>> q.question_text = "What"s up?">>> q.save()# objects.all() displays all the questions in the database.>>> Question.objects.all()[<Question: Question object>]打印所有的 Question 时，输出的结果是 [<Question: Question object>]，我们可以修改模型类，使其输出更为易懂的描述。修改模型类：from django.db import modelsclass Question(models.Model): # ... def __str__(self): # __unicode__ on Python 2 return self.question_textclass Choice(models.Model): # ... def __str__(self): # __unicode__ on Python 2 return self.choice_text接下来继续测试：>>> from polls.models import Question, Choice# Make sure our __str__() addition worked.>>> Question.objects.all()[<Question: What"s up?>]# Django provides a rich database lookup API that"s entirely driven by# keyword arguments.>>> Question.objects.filter(id=1)[<Question: What"s up?>]>>> Question.objects.filter(question_text__startswith="What")[<Question: What"s up?>]# Get the question that was published this year.>>> from django.utils import timezone>>> current_year = timezone.now().year>>> Question.objects.get(pub_date__year=current_year)<Question: What"s up?># Request an ID that doesn"t exist, this will raise an exception.>>> Question.objects.get(id=2)Traceback (most recent call last): ...DoesNotExist: Question matching query does not exist.# Lookup by a primary key is the most common case, so Django provides a# shortcut for primary-key exact lookups.# The following is identical to Question.objects.get(id=1).>>> Question.objects.get(pk=1)<Question: What"s up?># Make sure our custom method worked.>>> q = Question.objects.get(pk=1)# Give the Question a couple of Choices. The create call constructs a new# Choice object, does the INSERT statement, adds the choice to the set# of available choices and returns the new Choice object. Django creates# a set to hold the "other side" of a ForeignKey relation# (e.g. a question"s choice) which can be accessed via the API.>>> q = Question.objects.get(pk=1)# Display any choices from the related object set -- none so far.>>> q.choice_set.all()[]# Create three choices.>>> q.choice_set.create(choice_text="Not much", votes=0)<Choice: Not much>>>> q.choice_set.create(choice_text="The sky", votes=0)<Choice: The sky>>>> c = q.choice_set.create(choice_text="Just hacking again", votes=0)# Choice objects have API access to their related Question objects.>>> c.question<Question: What"s up?># And vice versa: Question objects get access to Choice objects.>>> q.choice_set.all()[<Choice: Not much>, <Choice: The sky>, <Choice: Just hacking again>]>>> q.choice_set.count()3# The API automatically follows relationships as far as you need.# Use double underscores to separate relationships.# This works as many levels deep as you want; there"s no limit.# Find all Choices for any question whose pub_date is in this year# (reusing the "current_year" variable we created above).>>> Choice.objects.filter(question__pub_date__year=current_year)[<Choice: Not much>, <Choice: The sky>, <Choice: Just hacking again>]# Let"s delete one of the choices. Use delete() for that.>>> c = q.choice_set.filter(choice_text__startswith="Just hacking")>>> c.delete()>>> 上面这部分测试，涉及到 django orm 相关的知识，详细说明可以参考 Django中的ORM。5. 管理 adminDjango有一个优秀的特性, 内置了Django admin后台管理界面, 方便管理者进行添加和删除网站的内容.新建的项目系统已经为我们设置好了后台管理功能，见 mysite/settings.py：INSTALLED_APPS = ( "django.contrib.admin", #默认添加后台管理功能 "django.contrib.auth", "django.contrib.contenttypes", "django.contrib.sessions", "django.contrib.messages", "django.contrib.staticfiles", "mysite",)同时也已经添加了进入后台管理的 url, 可以在 mysite/urls.py 中查看：url(r"^admin/", include(admin.site.urls)), #可以使用设置好的url进入网站后台接下来我们需要创建一个管理用户来登录 admin 后台管理界面：$ python manage.py createsuperuserUsername (leave blank to use "june"): adminEmail address:Password:Password (again):Superuser created successfully.总结最后，来看项目目录结构：mysite├── db.sqlite3├── manage.py├── mysite│ ├── __init__.py│ ├── settings.py│ ├── urls.py│ ├── wsgi.py├── polls│ ├── __init__.py│ ├── admin.py│ ├── migrations│ │ ├── 0001_initial.py│ │ ├── __init__.py│ ├── models.py│ ├── templates│ │ └── polls│ │ ├── detail.html│ │ ├── index.html│ │ └── results.html│ ├── tests.py│ ├── urls.py│ ├── views.py└── templates └── admin └── base_site.htm 通过上面的介绍，对 django 的安装、运行以及如何创建视 图和模型有了一个清晰的认识，接下来就可以深入的学习 django 的自动化测试、持久化、中间件、国 际 化等知识。

同意上面对28,29,34的回答。其它有不同看法：30题答案应该为B.otherwise，otherwise是副词，意为“否则的话”，全句意为：他应该是在工作，否则的话是在忙着。如果用else一般跟or的后面，而but的后面常跟otherwise31.全面有having received...,表明此动作在前，故后面不用to have been33.整个句子都是逗号，所以答案应该是which,其它答案均错，从语法上是不成立的。

我这几年下来已经投了快550本电影的票了，不知道算不算regular voters，估计他们看到注册地是中国大陆的就直接无视了

me too

IMDB是目前全球互联网中最大的一个电影资料库，里面包括了几乎所有的电影，以及1982年以后的电视剧集。IMDB的资料中包括了影片的众多信息，演员，片长，内容介绍，分级，评论等，就个人买碟而言，很大程度上也是参考IMDB的得分。 而IMDB的得分又是如何来的呢？它的可靠性又有多少呢？让我们通过《魔戒1：护戒使者》来做具体分析吧，先看上图： 这张图就是魔戒1的所有评分者的分数的一个条状统计图。 从中我们可以看到各个分数段的大致比例，比如这儿就可以发现，超过一半的人是打满分的。 根据IMDB网站上公布的TOP250评分标准： imdb top 250用的是贝叶斯统计的算法得出的加权分(Weighted Rank-WR)，公式如下： weighted rank (WR) = (v ÷ (v+m)) × R + (m ÷ (v+m)) × C 其中： R = average for the movie (mean) = (Rating) （是用普通的方法计算出的平均分） v = number of votes for the movie = (votes)（投票人数，需要注意的是，只有经常投票者才会被计算在内，这个下面详细解释） m = minimum votes required to be listed in the top 250 (currently 1250) （进入imdb top 250需要的最小票数，只有三两个人投票的电影就算得满分也没用的） C = the mean vote across the whole report (currently 6.9) （目前所有电影的平均得分） 另外重点来了，根据这个注释： note: for this top 250， only votes from regular voters are considered. 只有‘regular voters‘的投票才会被计算在IMDB top 250之内，这就是IMDB防御因为某种电影的fans拉票而影响 top 250结果，把top 250尽量限制在资深影迷投票范围内的主要方法。regular voter的标准不详，估计至少是“投票电影超过xxx 部以上”这样的水平，搞不好还会加上投票的时间分布，为支持自己的心爱电影一天内给N百部电影投票估计也不行。 因此，细心的人可以注意到，列入IMDB top 250的电影，其主页面上的分数与250列表中的分数是不同的。以魔戒1为例，它在自己的页面http://www.imdb.com/title/tt0120737/中的分数是8.8，而列表中是8.7。一般 250表中的得分都会低于自己页面中的得分，越是娱乐片差距越大。这大概是因为regular voter对于电影的要求通常较高的关系。

山若

A 首先在A和B两个选项中选,因为题目已经确定是虚拟句所以肯定是过去时态,而从句是过去完成时态,主句是表示的"现在",所以就是过去时态了.(根据虚拟句的法则,是过去的事情那么从句就用过去的过去即过去完成时态)而B选项的意思是"本该```"的意思,如:you should have finished your homework before supper.你本该在晚饭前完成作业.,2,a 条件句过去时虚拟语气 主句现代时虚拟语气 结构：would + do,2,A 很简单，用不着一堆语法解释。条件句是对过去的假设，主句是对现在的假设，都是虚拟的，就都按照正常时态倒退一个时态就好了。,2,D,2,答案 是 B 因为是对过去条件的 假设 是虚拟语气句型,2,B,2,选择B，过去将来时，俺是凭语感得出答案的，不用说了，你问问老外，肯定是B 如果paul在上次的投票中得到多于6票的选票，那他现在就应该是我们的主席了 这样看看，选什么？,1,A 这是个混合虚拟语气，从句是对过去的虚拟所以用的是had received,而主句是对现在情况的虚拟（用了时间状语now），所以用的是would be。,0,If paul had received six more votes in the last election,he ______ our chairman now. A.would be B.would have been C.will be D.must have been. 请说出选择的理由. 可是我的语感告诉我是B。 我很难理解A的感觉！

调用mistake函数，不需要加上void

A B D B A A C B应该是这样的吧!^-^

本文演示如何创建一个简单的 django 网站，使用的 django 版本为1.7。1. 创建项目运行下面命令就可以创建一个 django 项目，项目名称叫 mysite ：$ django-admin.py startproject mysite创建后的项目目录如下：mysite├── manage.py└── mysite ├── __init__.py ├── settings.py ├── urls.py └── wsgi.py1 directory, 5 files说明：__init__.py ：让 Python 把该目录当成一个开发包 (即一组模块)所需的文件。 这是一个空文件，一般你不需要修改它。manage.py ：一种命令行工具，允许你以多种方式与该 Django 项目进行交互。 键入python manage.py help，看一下它能做什么。 你应当不需要编辑这个文件；在这个目录下生成它纯是为了方便。settings.py ：该 Django 项目的设置或配置。urls.py：Django项目的URL路由设置。目前，它是空的。wsgi.py：WSGI web 应用服务器的配置文件。更多细节，查看 How to deploy with WSGI接下来，你可以修改 settings.py 文件，例如：修改 LANGUAGE_CODE、设置时区 TIME_ZONESITE_ID = 1LANGUAGE_CODE = "zh_CN"TIME_ZONE = "Asia/Shanghai"USE_TZ = True 上面开启了 [Time zone](https://docs.djangoproject.com/en/1.7/topics/i18n/timezones/) 特性，需要安装 pytz：$ sudo pip install pytz2. 运行项目在运行项目之前，我们需要创建数据库和表结构，这里我使用的默认数据库：$ python manage.py migrateOperations to perform: Apply all migrations: admin, contenttypes, auth, sessionsRunning migrations: Applying contenttypes.0001_initial... OK Applying auth.0001_initial... OK Applying admin.0001_initial... OK Applying sessions.0001_initial... OK然后启动服务：$ python manage.py runserver你会看到下面的输出：Performing system checks...System check identified no issues (0 silenced).January 28, 2015 - 02:08:33Django version 1.7.1, using settings "mysite.settings"Starting development server at http://127.0.0.1:8000/Quit the server with CONTROL-C.这将会在端口8000启动一个本地服务器, 并且只能从你的这台电脑连接和访问。 既然服务器已经运行起来了，现在用网页浏览器访问 http://127.0.0.1:8000/。你应该可以看到一个令人赏心悦目的淡蓝色 Django 欢迎页面它开始工作了。你也可以指定启动端口:$ python manage.py runserver 8080以及指定 ip：$ python manage.py runserver 0.0.0.0:80003. 创建 app前面创建了一个项目并且成功运行，现在来创建一个 app，一个 app 相当于项目的一个子模块。在项目目录下创建一个 app：$ python manage.py startapp polls如果操作成功，你会在 mysite 文件夹下看到已经多了一个叫 polls 的文件夹，目录结构如下：polls├── __init__.py├── admin.py├── migrations│ └── __init__.py├── models.py├── tests.py└── views.py1 directory, 6 files4. 创建模型每一个 Django Model 都继承自 django.db.models.Model在 Model 当中每一个属性 attribute 都代表一个 database field通过 Django Model API 可以执行数据库的增删改查, 而不需要写一些数据库的查询语句打开 polls 文件夹下的 models.py 文件。创建两个模型：import datetimefrom django.db import modelsfrom django.utils import timezoneclass Question(models.Model): question_text = models.CharField(max_length=200) pub_date = models.DateTimeField("date published") def was_published_recently(self): return self.pub_date >= timezone.now() - datetime.timedelta(days=1)class Choice(models.Model): question = models.ForeignKey(Question) choice_text = models.CharField(max_length=200) votes = models.IntegerField(default=0)然后在 mysite/settings.py 中修改 INSTALLED_APPS 添加 polls：INSTALLED_APPS = ( "django.contrib.admin", "django.contrib.auth", "django.contrib.contenttypes", "django.contrib.sessions", "django.contrib.messages", "django.contrib.staticfiles", "polls",)在添加了新的 app 之后，我们需要运行下面命令告诉 Django 你的模型做了改变，需要迁移数据库：$ python manage.py makemigrations polls你会看到下面的输出日志：Migrations for "polls": 0001_initial.py: - Create model Choice - Create model Question - Add field question to choice你可以从 polls/migrations/0001_initial.py 查看迁移语句。运行下面语句，你可以查看迁移的 sql 语句：$ python manage.py sqlmigrate polls 0001输出结果：BEGIN;CREATE TABLE "polls_choice" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "choice_text" varchar(200) NOT NULL, "votes" integer NOT NULL);CREATE TABLE "polls_question" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "question_text" varchar(200) NOT NULL, "pub_date" datetime NOT NULL);CREATE TABLE "polls_choice__new" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "choice_text" varchar(200) NOT NULL, "votes" integer NOT NULL, "question_id" integer NOT NULL REFERENCES "polls_question" ("id"));INSERT INTO "polls_choice__new" ("choice_text", "votes", "id") SELECT "choice_text", "votes", "id" FROM "polls_choice";DROP TABLE "polls_choice";ALTER TABLE "polls_choice__new" RENAME TO "polls_choice";CREATE INDEX polls_choice_7aa0f6ee ON "polls_choice" ("question_id");COMMIT;你可以运行下面命令，来检查数据库是否有问题：$ python manage.py check再次运行下面的命令，来创建新添加的模型：$ python manage.py migrateOperations to perform: Apply all migrations: admin, contenttypes, polls, auth, sessionsRunning migrations: Applying polls.0001_initial... OK总结一下，当修改一个模型时，需要做以下几个步骤：修改 models.py 文件运行 python manage.py makemigrations 创建迁移语句运行 python manage.py migrate，将模型的改变迁移到数据库中你可以阅读 django-admin.py documentation，查看更多 manage.py 的用法。创建了模型之后，我们可以通过 Django 提供的 API 来做测试。运行下面命令可以进入到 python shell 的交互模式：$ python manage.py shell下面是一些测试：>>> from polls.models import Question, Choice # Import the model classes we just wrote.# No questions are in the system yet.>>> Question.objects.all()[]# Create a new Question.# Support for time zones is enabled in the default settings file, so# Django expects a datetime with tzinfo for pub_date. Use timezone.now()# instead of datetime.datetime.now() and it will do the right thing.>>> from django.utils import timezone>>> q = Question(question_text="What"s new?", pub_date=timezone.now())# Save the object into the database. You have to call save() explicitly.>>> q.save()# Now it has an ID. Note that this might say "1L" instead of "1", depending# on which database you"re using. That"s no biggie; it just means your# database backend prefers to return integers as Python long integer# objects.>>> q.id1# Access model field values via Python attributes.>>> q.question_text"What"s new?">>> q.pub_datedatetime.datetime(2012, 2, 26, 13, 0, 0, 775217, tzinfo=<UTC>)# Change values by changing the attributes, then calling save().>>> q.question_text = "What"s up?">>> q.save()# objects.all() displays all the questions in the database.>>> Question.objects.all()[<Question: Question object>]打印所有的 Question 时，输出的结果是 [<Question: Question object>]，我们可以修改模型类，使其输出更为易懂的描述。修改模型类：from django.db import modelsclass Question(models.Model): # ... def __str__(self): # __unicode__ on Python 2 return self.question_textclass Choice(models.Model): # ... def __str__(self): # __unicode__ on Python 2 return self.choice_text接下来继续测试：>>> from polls.models import Question, Choice# Make sure our __str__() addition worked.>>> Question.objects.all()[<Question: What"s up?>]# Django provides a rich database lookup API that"s entirely driven by# keyword arguments.>>> Question.objects.filter(id=1)[<Question: What"s up?>]>>> Question.objects.filter(question_text__startswith="What")[<Question: What"s up?>]# Get the question that was published this year.>>> from django.utils import timezone>>> current_year = timezone.now().year>>> Question.objects.get(pub_date__year=current_year)<Question: What"s up?># Request an ID that doesn"t exist, this will raise an exception.>>> Question.objects.get(id=2)Traceback (most recent call last): ...DoesNotExist: Question matching query does not exist.# Lookup by a primary key is the most common case, so Django provides a# shortcut for primary-key exact lookups.# The following is identical to Question.objects.get(id=1).>>> Question.objects.get(pk=1)<Question: What"s up?># Make sure our custom method worked.>>> q = Question.objects.get(pk=1)# Give the Question a couple of Choices. The create call constructs a new# Choice object, does the INSERT statement, adds the choice to the set# of available choices and returns the new Choice object. Django creates# a set to hold the "other side" of a ForeignKey relation# (e.g. a question"s choice) which can be accessed via the API.>>> q = Question.objects.get(pk=1)# Display any choices from the related object set -- none so far.>>> q.choice_set.all()[]# Create three choices.>>> q.choice_set.create(choice_text="Not much", votes=0)<Choice: Not much>>>> q.choice_set.create(choice_text="The sky", votes=0)<Choice: The sky>>>> c = q.choice_set.create(choice_text="Just hacking again", votes=0)# Choice objects have API access to their related Question objects.>>> c.question<Question: What"s up?># And vice versa: Question objects get access to Choice objects.>>> q.choice_set.all()[<Choice: Not much>, <Choice: The sky>, <Choice: Just hacking again>]>>> q.choice_set.count()3# The API automatically follows relationships as far as you need.# Use double underscores to separate relationships.# This works as many levels deep as you want; there"s no limit.# Find all Choices for any question whose pub_date is in this year# (reusing the "current_year" variable we created above).>>> Choice.objects.filter(question__pub_date__year=current_year)[<Choice: Not much>, <Choice: The sky>, <Choice: Just hacking again>]# Let"s delete one of the choices. Use delete() for that.>>> c = q.choice_set.filter(choice_text__startswith="Just hacking")>>> c.delete()>>> 上面这部分测试，涉及到 django orm 相关的知识，详细说明可以参考 Django中的ORM。5. 管理 adminDjango有一个优秀的特性, 内置了Django admin后台管理界面, 方便管理者进行添加和删除网站的内容.新建的项目系统已经为我们设置好了后台管理功能，见 mysite/settings.py：INSTALLED_APPS = ( "django.contrib.admin", #默认添加后台管理功能 "django.contrib.auth", "django.contrib.contenttypes", "django.contrib.sessions", "django.contrib.messages", "django.contrib.staticfiles", "mysite",)同时也已经添加了进入后台管理的 url, 可以在 mysite/urls.py 中查看：url(r"^admin/", include(admin.site.urls)), #可以使用设置好的url进入网站后台接下来我们需要创建一个管理用户来登录 admin 后台管理界面：$ python manage.py createsuperuserUsername (leave blank to use "june"): adminEmail address:Password:Password (again):Superuser created successfully.总结最后，来看项目目录结构：mysite├── db.sqlite3├── manage.py├── mysite│ ├── __init__.py│ ├── settings.py│ ├── urls.py│ ├── wsgi.py├── polls│ ├── __init__.py│ ├── admin.py│ ├── migrations│ │ ├── 0001_initial.py│ │ ├── __init__.py│ ├── models.py│ ├── templates│ │ └── polls│ │ ├── detail.html│ │ ├── index.html│ │ └── results.html│ ├── tests.py│ ├── urls.py│ ├── views.py└── templates └── admin └── base_site.htm 通过上面的介绍，对 django 的安装、运行以及如何创建视 图和模型有了一个清晰的认识，接下来就可以深入的学习 django 的自动化测试、持久化、中间件、国 际 化等知识。

1. 创建项目运行下面命令就可以创建一个 django 项目，项目名称叫 mysite ：$ django-admin.py startproject mysite创建后的项目目录如下：mysite├── manage.py└── mysite├── __init__.py├── settings.py├── urls.py└── wsgi.py1 directory, 5 files说明：__init__.py ：让 Python 把该目录当成一个开发包 (即一组模块)所需的文件。 这是一个空文件，一般你不需要修改它。manage.py ：一种命令行工具，允许你以多种方式与该 Django 项目进行交互。 键入python manage.py help，看一下它能做什么。 你应当不需要编辑这个文件；在这个目录下生成它纯是为了方便。settings.py ：该 Django 项目的设置或配置。urls.py：Django项目的URL路由设置。目前，它是空的。wsgi.py：WSGI web 应用服务器的配置文件。更多细节，查看 How to deploy with WSGI接下来，你可以修改 settings.py 文件，例如：修改 LANGUAGE_CODE、设置时区 TIME_ZONESITE_ID = 1LANGUAGE_CODE = "zh_CN"TIME_ZONE = "Asia/Shanghai"USE_TZ = True 上面开启了 [Time zone](https://docs.djangoproject.com/en/1.7/topics/i18n/timezones/) 特性，需要安装 pytz：$ sudo pip install pytz2. 运行项目在运行项目之前，我们需要创建数据库和表结构，这里我使用的默认数据库：$ python manage.py migrateOperations to perform:Apply all migrations: admin, contenttypes, auth, sessionsRunning migrations:Applying contenttypes.0001_initial... OKApplying auth.0001_initial... OKApplying admin.0001_initial... OKApplying sessions.0001_initial... OK然后启动服务：$ python manage.py runserver你会看到下面的输出：Performing system checks...System check identified no issues (0 silenced).January 28, 2015 - 02:08:33Django version 1.7.1, using settings "mysite.settings"Starting development server at http://127.0.0.1:8000/Quit the server with CONTROL-C.这将会在端口8000启动一个本地服务器, 并且只能从你的这台电脑连接和访问。 既然服务器已经运行起来了，现在用网页浏览器访问 http://127.0.0.1:8000/。你应该可以看到一个令人赏心悦目的淡蓝色 Django 欢迎页面它开始工作了。你也可以指定启动端口:$ python manage.py runserver 8080以及指定 ip：$ python manage.py runserver 0.0.0.0:80003. 创建 app前面创建了一个项目并且成功运行，现在来创建一个 app，一个 app 相当于项目的一个子模块。在项目目录下创建一个 app：$ python manage.py startapp polls如果操作成功，你会在 mysite 文件夹下看到已经多了一个叫 polls 的文件夹，目录结构如下：polls├── __init__.py├── admin.py├── migrations│ └── __init__.py├── models.py├── tests.py└── views.py1 directory, 6 files4. 创建模型每一个 Django Model 都继承自 django.db.models.Model在 Model 当中每一个属性 attribute 都代表一个 database field通过 Django Model API 可以执行数据库的增删改查, 而不需要写一些数据库的查询语句打开 polls 文件夹下的 models.py 文件。创建两个模型：import datetimefrom django.db import modelsfrom django.utils import timezoneclass Question(models.Model):question_text = models.CharField(max_length=200)pub_date = models.DateTimeField("date published")def was_published_recently(self):return self.pub_date >= timezone.now() - datetime.timedelta(days=1)class Choice(models.Model):question = models.ForeignKey(Question)choice_text = models.CharField(max_length=200)votes = models.IntegerField(default=0)然后在 mysite/settings.py 中修改 INSTALLED_APPS 添加 polls：INSTALLED_APPS = ("django.contrib.admin","django.contrib.auth","django.contrib.contenttypes","django.contrib.sessions","django.contrib.messages","django.contrib.staticfiles","polls",)在添加了新的 app 之后，我们需要运行下面命令告诉 Django 你的模型做了改变，需要迁移数据库：$ python manage.py makemigrations polls你会看到下面的输出日志：Migrations for "polls":0001_initial.py:- Create model Choice- Create model Question- Add field question to choice你可以从 polls/migrations/0001_initial.py 查看迁移语句。运行下面语句，你可以查看迁移的 sql 语句：$ python manage.py sqlmigrate polls 0001输出结果：BEGIN;CREATE TABLE "polls_choice" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "choice_text" varchar(200) NOT NULL, "votes" integer NOT NULL);CREATE TABLE "polls_question" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "question_text" varchar(200) NOT NULL, "pub_date" datetime NOT NULL);CREATE TABLE "polls_choice__new" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "choice_text" varchar(200) NOT NULL, "votes" integer NOT NULL, "question_id" integer NOT NULL REFERENCES "polls_question" ("id"));INSERT INTO "polls_choice__new" ("choice_text", "votes", "id") SELECT "choice_text", "votes", "id" FROM "polls_choice";DROP TABLE "polls_choice";ALTER TABLE "polls_choice__new" RENAME TO "polls_choice";CREATE INDEX polls_choice_7aa0f6ee ON "polls_choice" ("question_id");COMMIT;你可以运行下面命令，来检查数据库是否有问题：$ python manage.py check再次运行下面的命令，来创建新添加的模型：$ python manage.py migrateOperations to perform:Apply all migrations: admin, contenttypes, polls, auth, sessionsRunning migrations:Applying polls.0001_initial... OK总结一下，当修改一个模型时，需要做以下几个步骤：修改 models.py 文件运行 python manage.py makemigrations 创建迁移语句运行 python manage.py migrate，将模型的改变迁移到数据库中你可以阅读 django-admin.py documentation，查看更多 manage.py 的用法。创建了模型之后，我们可以通过 Django 提供的 API 来做测试。运行下面命令可以进入到 python shell 的交互模式：$ python manage.py shell下面是一些测试：>>> from polls.models import Question, Choice # Import the model classes we just wrote.# No questions are in the system yet.>>> Question.objects.all()[]# Create a new Question.# Support for time zones is enabled in the default settings file, so# Django expects a datetime with tzinfo for pub_date. Use timezone.now()# instead of datetime.datetime.now() and it will do the right thing.>>> from django.utils import timezone>>> q = Question(question_text="What"s new?", pub_date=timezone.now())# Save the object into the database. You have to call save() explicitly.>>> q.save()# Now it has an ID. Note that this might say "1L" instead of "1", depending# on which database you"re using. That"s no biggie; it just means your# database backend prefers to return integers as Python long integer# objects.>>> q.id1# Access model field values via Python attributes.>>> q.question_text"What"s new?">>> q.pub_datedatetime.datetime(2012, 2, 26, 13, 0, 0, 775217, tzinfo=<UTC>)# Change values by changing the attributes, then calling save().>>> q.question_text = "What"s up?">>> q.save()# objects.all() displays all the questions in the database.>>> Question.objects.all()[<Question: Question object>]打印所有的 Question 时，输出的结果是 [<Question: Question object>]，我们可以修改模型类，使其输出更为易懂的描述。修改模型类：from django.db import modelsclass Question(models.Model):# ...def __str__(self): # __unicode__ on Python 2return self.question_textclass Choice(models.Model):# ...def __str__(self): # __unicode__ on Python 2return self.choice_text接下来继续测试：>>> from polls.models import Question, Choice# Make sure our __str__() addition worked.>>> Question.objects.all()[<Question: What"s up?>]# Django provides a rich database lookup API that"s entirely driven by# keyword arguments.>>> Question.objects.filter(id=1)[<Question: What"s up?>]>>> Question.objects.filter(question_text__startswith="What")[<Question: What"s up?>]# Get the question that was published this year.>>> from django.utils import timezone>>> current_year = timezone.now().year>>> Question.objects.get(pub_date__year=current_year)<Question: What"s up?># Request an ID that doesn"t exist, this will raise an exception.>>> Question.objects.get(id=2)Traceback (most recent call last):...DoesNotExist: Question matching query does not exist.# Lookup by a primary key is the most common case, so Django provides a# shortcut for primary-key exact lookups.# The following is identical to Question.objects.get(id=1).>>> Question.objects.get(pk=1)<Question: What"s up?># Make sure our custom method worked.>>> q = Question.objects.get(pk=1)# Give the Question a couple of Choices. The create call constructs a new# Choice object, does the INSERT statement, adds the choice to the set# of available choices and returns the new Choice object. Django creates# a set to hold the "other side" of a ForeignKey relation# (e.g. a question"s choice) which can be accessed via the API.>>> q = Question.objects.get(pk=1)# Display any choices from the related object set -- none so far.>>> q.choice_set.all()[]# Create three choices.>>> q.choice_set.create(choice_text="Not much", votes=0)<Choice: Not much>>>> q.choice_set.create(choice_text="The sky", votes=0)<Choice: The sky>>>> c = q.choice_set.create(choice_text="Just hacking again", votes=0)# Choice objects have API access to their related Question objects.>>> c.question<Question: What"s up?># And vice versa: Question objects get access to Choice objects.>>> q.choice_set.all()[<Choice: Not much>, <Choice: The sky>, <Choice: Just hacking again>]>>> q.choice_set.count()3# The API automatically follows relationships as far as you need.# Use double underscores to separate relationships.# This works as many levels deep as you want; there"s no limit.# Find all Choices for any question whose pub_date is in this year# (reusing the "current_year" variable we created above).>>> Choice.objects.filter(question__pub_date__year=current_year)[<Choice: Not much>, <Choice: The sky>, <Choice: Just hacking again>]# Let"s delete one of the choices. Use delete() for that.>>> c = q.choice_set.filter(choice_text__startswith="Just hacking")>>> c.delete()>>> 上面这部分测试，涉及到 django orm 相关的知识，详细说明可以参考 Django中的ORM。5. 管理 adminDjango有一个优秀的特性, 内置了Django admin后台管理界面, 方便管理者进行添加和删除网站的内容.新建的项目系统已经为我们设置好了后台管理功能，见 mysite/settings.py：INSTALLED_APPS = ("django.contrib.admin", #默认添加后台管理功能"django.contrib.auth","django.contrib.contenttypes","django.contrib.sessions","django.contrib.messages","django.contrib.staticfiles","mysite",)同时也已经添加了进入后台管理的 url, 可以在 mysite/urls.py 中查看：url(r"^admin/", include(admin.site.urls)), #可以使用设置好的url进入网站后台接下来我们需要创建一个管理用户来登录 admin 后台管理界面：$ python manage.py createsuperuserUsername (leave blank to use "june"): adminEmail address:Password:Password (again):Superuser created successfully.总结最后，来看项目目录结构：mysite├── db.sqlite3├── manage.py├── mysite│ ├── __init__.py│ ├── settings.py│ ├── urls.py│ ├── wsgi.py├── polls│ ├── __init__.py│ ├── admin.py│ ├── migrations│ │ ├── 0001_initial.py│ │ ├── __init__.py│ ├── models.py│ ├── templates│ │ └── polls│ │ ├── detail.html│ │ ├── index.html│ │ └── results.html│ ├── tests.py│ ├── urls.py│ ├── views.py└── templates└── admin└── base_site.htm

门罗主义（Monroe Doctrine）发表于1823年，表明美利坚合众国当时的观点，即欧洲列强不应再殖民美洲，或涉足美国与墨西哥等美洲国家之主权相关事务。而对于欧洲各国之间的争端，或各国与其美洲殖民地之间的战事，美国保持中立。相关战事若发生于美洲，美国将视为具敌意之行为。此观点由詹姆斯·门罗总统（President James Monroe）发表于第七次对国会演说的国情咨文中。演说开头迟疑，而后转为充满热情。这是美国涉外事务之转折点。此学说初由约翰·昆西·亚当斯等诸人构思而成，以宣布美利坚合众国在道义上反对殖民主义；后经多方重新诠释为种种广义之说法；西奥多·罗斯福总统即以之作为行使美式殖民主义之许可（以门罗主义之罗斯福推论（Roosevelt Corollary）而知名）。美国国务卿克里2013年11月18日在华盛顿表示，门罗主义的时代已经终结，今天的美洲国家间关系建立在平等伙伴关系和共同责任基础上，美国不再致力于干预其他美洲国家事务 。

你确定是这句词吗

perspective 英[pu0259u02c8spektu026av] 美[pu0259ru02c8spektu026av] n. 透镜，望远镜; 观点，看法; 远景，景色; 洞察力; adj. （按照） 透视画法的; 透视的; [例句]He says the death of his father 18 months ago has given him a new perspectiveon life他说18个月前父亲的去世让他对人生有了新的认识。[其他] 复数：perspectives

可以将CMD命令提示符的起始位置进行更改即可。具体步骤如下：1、首先我们需要先找到命令提示符所在的文件目录。可以在开始运行程序中输入CMD，一般回自动搜索匹配。2、右键点击命令提示符，在弹出菜单中，选择“打开文件位置”；3、然后我们就可以进入到命令提示符所在的文件目录，选中该程序。4、右键点击命令提示符，在弹出菜单中选择“属性”，进入详细设置；5、在属性详细设置中，点击“快捷方式”选项卡，然后再下方会看到有“起始位置”；6、将起始位置，更改为你想要实现的路径，也就是“c:windowssystem32”，然后确定关闭；7、重新打开你的CMD命令提示符，就可以看到更改生效了。

perspective_百度翻译perspective 英[pu0259u02c8spektu026av] 美[pu0259ru02c8spektu026av] n. 透镜，望远镜; 观点，看法; 远景，景色; 洞察力; adj. （按照） 透视画法的; 透视的;

更新1: 为何虚数为复数？而虚数如何应用于真实世界，研究虚数有甚么发现？ 虚数 图片参考：baike.baidu/pic/1/11710102544318064 (1)[unreliable figure]∶虚假不实的数位 (2)[imaginary number]∶实数与虚数单位之积 亦即实部为零的复数(如3i) 在数学里，如果有某个数的平方是负数的话，那个数就是虚数了。所有的虚数都是复数。 “虚数”这个名词是17世纪著名数学家笛卡尔创制，因为当时的观念认为这是真实不存在的数位。后来发现虚数可对应平面上的纵轴，与对应平面上横轴的实数同样真实。虚数轴和实数轴构成的平面称复平面 复平面上每一点对应着一个复数。 虚数的符号 1777年瑞士数学家欧拉开始使用符号i=√(-1)表示虚数的单位。而后人将虚数和实数有机地结合起来 写成a+bi形式 (a、b为实数)，称为复数。 虚数的历史 由于虚数闯入数的领域时，人们对它的实际用处一无所知，在实际生活中似乎也没有用复数来表达的量，因此，在很长的一段时间里，人们对虚数产生过种种怀疑和误解。笛卡尔称“虚数”的本意是指他是假的；莱布尼兹在西元18世纪初则认为：“虚数是美妙而奇异的神灵隐蔽所，它几乎是既存在又不存在的两栖物。”欧拉尽管在许多地方用了虚数，但又说一切形如√(-1)、√(-2)的数学式都是不可能有的，纯属虚幻的。 欧拉之后，挪威的一个测量学家维塞尔，提出把复数a+bi用平面上的点（a，b）来表示。后来，高斯提出了复平面的概念，终于使复数有了立足之地，也为复数的应用开辟了道路。现在，复数一般用来表示向量（有方向的数量) 这在力学、地图学、航空学中的应用是十分广泛的。虚数越来越显示出其丰富的内容，真是：虚数不虚。 不表示实在数量的数词。如下面例子中的一、三、五、九、百、千、万等数词都是虚数。【例】以一当十｜三五成群｜千方百计｜万紫千红｜九牛一毛｜龙生九子｜三月不知肉味｜。 描述虚数 虚数 原作：劳伦斯·马克·莱瑟（阿姆斯壮大西洋州立学院） 翻译：徐国强 虚文自古向空构，艾字如今可倍乘。 所问逢人惊诧甚，生活何处有真能？ 嗟哉小试调音放，讶矣大为掌夜灯。 三极管中知用否，交流电路肯咸恒。 凭君漫问荒唐义，负值求根疑窦增。 情类当初听惯耳，事关负数见折肱。 几分繁复融学域，百计联席悦有朋。 但看几何三角地，蓬勃艾草意同承。 Imaginary number 图片参考：upload.wikimedia/ *** /mons/thumb/5/52/Gaussebene_Koordinatendarstellung/180px-Gaussebene_Koordinatendarstellung 图片参考：en. *** /skins-1.5/mon/images/magnify-clip In mathematics an imaginary number (or purely imaginary number) is a plex number whose square is a negative real number. Imaginary numbers were defined in 1572 by Rafael Bombelli. At the time such numbers were thought not to exist much as zero and the negative numbers were regarded by some as fictitious or useless. Many other mathematici were slow to believe in imaginary numbers at first including Descartes who wrote about them in his La Géométrie where the term was meant to be derogatory.[1] Contents 1 Definition 1.1 Corollary 2 Geometric interpretation 3 Applications of imaginary numbers 4 History 5 See also 6 References 7 External links Definition Any plex number z can be written as 图片参考：upload.wikimedia/math/e/7/7/e77e0e682bd347e9e7e1dec878ce8586 where 图片参考：upload.wikimedia/math/6/0/7/607708482f5a2afc26174c21834baad3 is the imaginary unit which has the defined property that: 图片参考：upload.wikimedia/math/4/4/b/44b33da6be905320353c4c1906ac7d29 The number 图片参考：upload.wikimedia/math/b/1/9/b19dfd822e2517400335d53c1556df72 defined by 图片参考：upload.wikimedia/math/4/e/0/4e0de3698dfd4a9ab0032ace23583f6f is the real part of the plex number 图片参考：upload.wikimedia/math/e/d/f/edffd1a73cb003cdba3d07600e9aa8f2 defined by 图片参考：upload.wikimedia/math/3/2/f/32fa1bd11a7cdfce10d45ef678d142a8 is the imaginary part. Although Descartes originally used the term "imaginary number" to mean what is currently meant by the term "plex number" the term "imaginary number" today usually me a plex number with a real part equal to 0 that is a number of the form i y. Zero (0) is the only number that is both real and imaginary. Corollary 图片参考：upload.wikimedia/math/b/0/0/b002b9e332482fd34f834c5b113e6493 图片参考：upload.wikimedia/math/8/3/4/834b498313a7d9d60031a206f2be9222 图片参考：upload.wikimedia/math/1/3/e/13e54d9243a424ab9ded92569cefda7c … and so on. Geometric interpretation Geometrically imaginary numbers are found on the vertical axis of the plex number plane allowing them to be presented orthogonal to the real axis. One way of viewing imaginary numbers is to consider a standard number line positively increasing in magnitude to the right and negatively increasing in magnitude to the left. At 0 on this x-axis draw a y-axis with "positive" direction going up; "positive" imaginary numbers then "increase" in magnitude upwards and "negative" imaginary numbers "decrease" in magnitude downwards. This vertical axis is often called the "imaginary axis" and is denoted 图片参考：upload.wikimedia/math/f/9/d/f9d3b767e53c2f6939003eef8c0690ed or simply Im. In this model multiplication by u2212 1 corresponds to a rotation of 180 degrees about the origin. Multiplication by i corresponds to a 90-degree rotation in the "positive" direction (i.e. counter-clockwise) and the equation i2 = u2212 1 is interpreted as saying that if we apply 2 90-degree rotations about the origin the result is a single 180-degree rotation. Note that a 90-degree rotation in the "negative" direction (i.e. clockwise) also satisfies this interpretation. This reflects the fact that u2212 i also solves the equation x2 = u2212 1 — see imaginary unit. In electrical engineering and related fields the imaginary unit is often written as j to avoid confusion with a changing current traditionally denoted by i. Applications of imaginary numbers ... 参考: Wikipedia 抄wiki而已 有啥意思

第一，你是否在网络地区限制区域。第二，账号问题。最后建议，先看下网络的问题。多百度找几个免费的可以登录的试试（我用的大师助手），如果可以就算了，不行就是账号问题。

“门罗主义”，出自1823年时任美国总统门罗提出的“美洲是美洲人的美洲”宣言，虽几经衍变，但长期是美国对拉美政策内核。“门罗主义”名义上声称美洲是美洲人的美洲，实质是为美国独霸美洲、推行强权政治开路，使其可以在美洲任意行使所谓“国际警察权”，迫使拉美国家按美国意志行事。