更具物质组成是否单一,可以把物质分成几类?在纯净物中可把物质分成几类?在单质中?在化合物中呢?

看图短文填空,更具图画和短文的内容,在短文的空白处天上一个适当的词,使短文意思完整
右图是一个小男孩对着自己的父亲指着一台电脑
This Sunday morning,I get up very early.I want to buy a 81 to use for school.I go to the biggest store in my city,There 82 so many computers there,I don't 83 which one to buy.”hiWhat can I do 84 you?“A young man asks me with a sweet smile.He looks like a student like me He patientl an swers all my questions With his help i decide to 85 the cheap one because he tells me it is a very good one ,I thank him very much.At last,I leave the store happily

英语翻译
世界贸易组织概况：
1994年4月15日在摩洛哥的马拉喀什市举行的关贸总协定乌拉圭回合部长会议决定成立更具全球性的世界贸易组织（简称“世贸组织”,world trade organization -- wto） ,以取代成立于1947年的关贸总协定（gatt）.
世贸组织是一个***于联合国的永久性国际组织.“1995年1月1日正式开始运作.”负责管理世界经济和贸易秩序,总部设在瑞士日内瓦莱蒙湖畔.1996年1月1日,它正式取代关贸总协定临时机构.世贸组织是具有法人地位的国际组织,在调解成员争端方面具有更高的权威性.它的前身是1947年订立的关税及贸易总协定.与关贸总协定相比,世贸组织涵盖货物贸易、服务贸易以及知识产权贸易,而关贸总协定只适用于商品货物贸易.
世界贸易组织的成就和贡献：
建立世贸组织的设想是在1944年7月举行的布雷顿森林会议上提出的,当时设想在成立世界银行和国际货币基金组织的同时,成立一个国际性贸易组织,从而使它们成为二次大战后左右世界经济的“货币－金融－贸易”三位一体的机构.1947年联合国贸易及就业会议签署的《哈瓦那***》同意成立世贸组织,后来由于美国的反对,世贸组织未能成立.同年,美国发起拟订了关贸总协定,作为推行贸易***化的临时契约.1986年关贸总协定乌拉圭回合谈判启动后,欧共体和加拿大于1990年分别正式提出成立世贸组织的议案,1994年4月在摩洛哥马拉喀什举行的关贸总协定部长级会议才正式决定成立世贸组织.
机器和软件翻译的请不要贴上来，

请英文好的朋友帮助修改一下英文作文,中文只是参考,不必完全更具中文翻译.
这个星期是新学期的第一周.
发书的时候,我们班的一个同学一拿到书就激动的说这将是他在语言学校学的最后一套书.
于是我们班的其他同学就开玩笑说：“虽然这是你的最后一套书,但是你未必一次就过哦,说不定要读两次.”
相比较A阶段的课程,B阶段的课程的考试总会难很多.
按照惯例B阶段会有两篇写作,其中一篇要求你在不借助字典的情况下,当场写一篇较长的学术文章.这是很多学生在担心的一项考试.
This week is the first week of new term. When distributing books , one of my classmate was quite exciting when he get book, and said: “These books will be my last term books in the language school." And we joked him: “Yes, they may be your last book, but it is not means you will pass this term just once, maybe will twice."
Compare the term A, the exam of the term B will always harder.
There will be two writing exam in the end. One of them require you writing a long academic essay without dictionary in maybe two hours in the classroom. That's why so many students feel nervous just in the term start.

＂How do you think of friendship in our life?＂更具这个问题,帮我写几句关于友谊的作文,不需要太多

批改英语作文
随着网络的发展,目前很多人给好友发电子贺卡.请更具以下提示阐述电子贺卡的优越性.
1.除图像外,还可以传递动画和声音,生动,有趣；传播速度快；
2.形式多样,还可以Flash或其他软件自己设计贺卡
3.节省纸张,有利于保护环境和树木
With the wide use of Internet,a increasing number of people prefer to send electronic cards to their friends to convey their wishes or feelings
There are many advantages in it,You can not only send pictures,but also can send vivid animations and interesting sound.These messages can be sent to others within seconds when you click it on the screen.What’s more,you can use Flash or other Microsoft to design your own electronic cards which have many different kinds.Most importantly,using electronic can save a large number of paper,which can contribute to protecting trees and environment.

解释一下 有了阴影,光明才更具耀眼.
类似于演讲稿
说说这句名言的意思,你为什么喜欢它 能为我们什么启发
不超过3分钟
感激不尽

更具短文内容和首写字母提示,把所缺单词的完整形式填写在短文后面的横线上,.
Children are often interested in fire（火）.They like to piay with matches（火柴） .If they are not c___,they start fires at home.They hide under beds qr just cry with fear instead of running to s___.20%-50% of all fiee deaths are children should learn about the dangers of fire.
Most fires start out small,but after a few minutes they can be big.The most important thing to do is to hide all matches.Of course,young children should never be left a_____in the home.Even if they don't play with fire,they may start a fire by trying to cook in the wrong way.
It'also important for children to learn how to crawl（爬） on the floor and b_____the smoke to get out of the house and call for help from another place.Remember not to go back into the home for your things.Firefighters will do this.
Everyone should prevent（预防） fires.But everyone doesn't have to fight big fires.Remember that fire is a tool（工具）,not a t_____.

改写句子
1、太阳出来了,花叶上的小露珠没有了.
（把小露珠当做人来写,使句子更生动）
2、海棠树开满了花.
（扩句,使句子更具体）

《科学是美丽的》题目
1、还有什么比原子中“云深不知处”的电子云更具朦胧美?还有什么比生命之梯回旋曲折的DNA更具活力美?还有什么比“纳米”世界中用原子砌成的钎巧结构更具精致美?.仿写一句
2、为了更好的传播科学知识,让大家感受科学的美,除了文中提到的绘画,写诗等途径,你还有什么好的创意?请用简洁的语言陈述你的创意.
创意：
陈述：

既然曲线比直线更具美感,那么我们的生活中绝大多数还是由直线构成的呢?
比如说纸张,为什么都要做成四四方方的,而不能做成椭圆形呢?
还有建筑,也是四方规整的,如果造成弯曲的,那还具有美感吗?
如果身边的事物变成曲线偏多的，

初二下英语更具汉语提示完成句子
1.天看起来要下雨,
It _____ _____ rain ,doern't it?
2.你认为到中午他可能停吗?
Do you think it _____ stop _____ noon?
3.我忘记带我的雨伞了.
I ______ my _____.
4.火车老是晚点,
The train is always late ,_____ _____
5.周末总在下雨,
It always _____ _____ _____ _____ ,_____ ______

【英语提问1】更具句意中文提示或英文解释完成下列各句.
1．elsa wants to be a ____(a person who does a job without getting any money) to help the old people.
2．my bike is ___.can i lend yours?
3．they will become ___ students this year．
4．jim is a ___ dog.he gets a chance to study in america.
5．a ___ is a man who serve people in a restaurant.
-
选用适当的词填空.
help　/　luck　/　visit　/　neighbour　/　kind　/　he
1．there　are　many　＿＿＿　of　animals　in　the　zoo．
2．the　woman　is　very　＿＿＿　to　get　a　free　ticket　for　the　film．
3．lucy　is　polite　and　＿＿＿．we　all　like　her．

乘数效应
X 0.9X 0.9*0.9X .等比数列相加为什么是 x/(1-0.9)是不是更具等比求和公式a1（1-0.9的n次方）/1-0.9 把 n趋向于无穷大,则 变成了 a1*（1-0）/1-0.9 变成a1/1-0.9

更具意思,写出含有“心”字的词语
1、一味追求便面光彩
2、关爱他人,富有同情心

急问：秦始皇陵和秦陵地宫哪个更具参观价值
要上临潼玩了,想在临潼呆一天一夜,然后再去爬华山,想在临潼玩一天,包括华清池兵马俑,还想参观秦始皇陵和秦陵地宫,怎样安排才能更加充分的参观这些景区,如果一定要在这两者中间选一个,哪个更具参观价值?
千万不要贴人家的,也没有用.

更具要求写一篇英语日记时间：2007.5.1天气晴朗,我和朋友去参观长城
要点1.坐汽车去2.自带食物和饮料3.在那里见到了很多外国朋友,并用英语和他们交谈4.感想（长城是世界上最伟大的建筑之一,长六千公里,有几千年历史,这一天很愉快）

语文问题
如螳螂捕蝉这类的寓言故事的成语。你还能举几个吗？
更具词语之间意蕴的搭配说出一个成语。
1、忘本 三国演义 洛阳 刘禅
2、孙悟空 太上老君 练丹 踢翻
3、鱼 湖面 皱纹 ABCC式词语
4、岁寒三友 画画 自信 苏轼
请写出宋词> >
写出关于海边、泰山、长城的成语
，流水不腐。
从善如流， 。
近水识水性， 。
欲知山中事， 。
《学会合作》中为了说明合作的重要。特地举了两个例子：1、
2、
学了这篇文章我想到了“ ”、
“ ”。等关于合作的名言警句。
常记 ， 。兴尽晚回舟， 。争渡，争渡， 。”
真正让词人“沉醉”的，又岂止是X厚的美酒？
看情况加分！速度回答
大家慢慢来。一道一道题来做。再补充哦

与格里菲斯肺炎双球菌转化实验相比,T2噬菌体侵染大肠杆菌的实验更具说服力,原因是?
T2噬菌体侵染大肠杆菌的实验过程中，保温时间不宜过长，原因是？
用被32P标记的噬菌体去侵染未被标记的大肠杆菌，离心后，发现上清液中有放射性物质存在，这些放射性物质的来源可能是？

怎么样才能让自己的文章更具文采?
我很羡慕他们的文章运用的字句不娇柔造作,很自然,仿佛有着浑然天成的味道.
我讨厌满分作文类似的文章,我喜欢像尚爱网,个性网里的文字一样,暖暖的,很自然的感觉.
看着他们的文章,我很自卑,那些词藻,有一些我从不会运用,
我不知道怎样才能像他们一样写出自己的真情实感,
求帮助或者求推荐一些书本,

实验小学五年级有180名师生去春游.更具下表的租车信息,怎样租车最省钱?
大巴200元40人
中巴车150元26人

更具线索回答问题,懒猴把字母天到相应的横线上完成一个谚语.
更具线索回答问题,懒猴把字母天到相应的横线上完成一个谚语.
①If the capital of England is London,circleL.If not,circle U.
②If there are five rings on the Olympic flag,circle YIf there are six,circleV.
3 If a frog has eight legs,circle M.If not ,circle T.
4 If ther are 13 in a baker's dozen,circle L.If not,circle T.
5 If there are 13 in a baker's dozen,circle L.If not,circle T.
6 If a baby kangaroo is a kid,circle B.If it is a joey,circle P.
7 If your mother's sister is your grandmother,circle P.If not,circle R.
8 If Washington is noe of the American presidents,circle A.If not circle I
9 If 100 centimeters equals one meter,circle E.If not,circle O.
10 If 9x9=81,circle S.If it does not,circle R.
11 If Shanghaiis east of China,circle N.If it is not,circle E.
12 If lavender is light purple,circle H.If it is not,circle S.
13 If Hawaii is an is land,circle O.If it is not,circle E.
14 If 6X8+2 is equal to 10X5,circle H.If it is not circle L.
15 If southpaws左撇子 are people who write ieft-handed,circle C.If they wirte right-handed ,circle J.
8:____ 11:___ 8____6:___6:____1:_____9:___
8:____3:_____8:____2:___
12:____9:____9:____6:____10:____5:____14:____9:______3:____13:____15:____5____13____7___8___4____8___2____

更具短文回答问题
Five years ago,David Smith wore an expensive suit to work every day.He said,"I used to carry a fresh suit to work with me,so I could change if my clothes got wrinkled（起皱）." Today David wears Nike pants and a sports shirt to the office.He hardly ever wears a necktie."I am working harder than ever," David says,"and I need to feel comfortable."
More and more companies are allowing their office workers to wear casual（休闲的）clothes to work.In the United States,office wear has changed gradually from formal to casual.In the early 1990s,many companies allowed their employees（雇员）to wear casual clothes on Friday.This became known as "casual Friday".But now,it has become an everyday thing.
Why have so many companies started allowing their employees to wear casual clothes?One reason is that it's easier for a company to attract new employees."A lot of young people don't want to dress up for work," says the owner of a software company.Another reason is that people seem happier and more effective when they are wearing comfortable clothes.In a study by a company,85 percent of employers（雇主）said that they believe that casual dress helps improve the relationship between the employers and the employees.Supporters of casual office wear als believe that casual office wear helps them save money."Suits are expensive,if you have to wear one every day," one person said."For the same amount of money,you can buy a lot more casual clothes."
99.What did David Smith carry to work every day five years ago?__________________________________________________.
100.Why does he wear pants and a sports shirt now?
__________________________________________________.
101.When did casual Friday start?
__________________________________________________.
102.Nowadays,many companies allow their staff to wear casual clothes every day,don't they?__________________________________________________.
103.The last paragraph tells us why employees are allowed to wear casual clothes every day.How many reasons does it mention?
__________________________________________________.
104.What is the percentage of the employers in favor of the casual clothes?__________________________________________________.
105.What do you think of wearing casual clothes in companies?__________________________________________________.

英语翻译
汉译英
假设你今年寒假将于父母出去旅行,请更具以下提问.以My winter vacation为题写文章
1,地点 海南
2,交通方式 做飞机
3,时间 一周
4,天气 情朗暖和
5,活动 购物.观光.游泳.打沙滩排球

请更具以下问题进行回答,要有算式~
有一桶水,用同样大小的瓶子去装,如果装满10瓶后,桶内还剩七分之五,如果装满9瓶后,还剩52千克.这同水原有多少千克?

将正偶数按上表排成五列,更具这样的排列规律2008应在第几行,第几列?
第一列 第二列 第三列 第四列 第五列
第一行 0 2 4 6 8
第二行 16 14 12 10 8
第三行 16 18 20 22 24
急嗷嗷嗷

求一篇英语作文
更具下面提示,写一篇发言稿,说明学好英语的重要性.
要点：1英点语的特点：活的语言,在世界范围内广泛实用.
2学英语的目的：为了在工作和交往中使用
3怎样提高口语能力：积极说,不怕错.创造环境多说英语、
4体会：“有志者事竟成.”只要坚持,就能学好
要求：1包括所有要点,但不要逐句翻译
2词数100左右
拜托各位了明天要急用希望今天能搞定