不必等到盛春再开花 1.2.文章①―④段写苹果和葡萄酒起什么作用?3.文中运用了＿＿＿＿和＿＿＿＿的论证方法.4.你怎样

你今天不必浇花,因为我已经浇过了You don't need to water the flowers today,since I have done it.我记得今天要去图书馆还书(return)I remember that I have to return the books to library.让我吃惊的是,他没认...

You don't need to translate every single word literally.It's enough to get the main meaning translated.

1.这一句表达对父亲的思念,为全文定下感情基调,又提示全文内容核心,突出背影,使读者产生悬念.
2.父亲心里的自我安慰 为了家庭与儿子必须但担起责任不要儿子为我担心

谢谢 望采纳!

不必说翠绿的青山,苍劲的松柏,浮动的白云,湛蓝的天空,也不必说夜莺在婉转得歌唱,麻雀在喳喳的嬉戏,美丽的蝴蝶在风中舞动,单是一株不起眼的小草就足以令人心旷神怡,它是那么嫩绿,那么坚强,迎着凛冽的寒风昂然挺立.

海内存知己,天涯若比邻

You can add a journal entry before coming to class,and choose one of the following:a meditation on "plum blossom" or the Lantern Festival(ala a song)...a piece of music you like...that may contemporize the choice of metaphor or imagery in these poems,in my collection,which in the rain,I read,today...Enjoy!We will read your poems in class; be prepared!
你上课之前可以写自己的日记什么的
然后选择写对梅花或者元宵节等歌曲或者你自己喜欢歌曲的感想
再后来要写诗歌,有可能会在课堂大声朗读你写的诗歌

1.“躁”改为“燥” “须”改为“需”.
2.原稿比喻原先的天空,最能体现污染的词是模糊
3.一行白鹭上青天 方框内应写的词语是黄、翠
4说明方法是列数字、举例子
5主要说明了现在环境污染严重,号召人们保护环境
6（1）河水污染（2）放火焚烧枯枝败叶（3）随地乱丢垃圾
7你自己选一些吧
1 在包包里放一双环保筷,一个购物袋；
2 看完电话记得关闭电源后拔下插头；
3 使用白炽灯的话,随手关灯是最省电的做法；
4 用淘米水浇花；
5 重复使用或者回收塑料瓶罐；

北方的秋天,不必说清晨满街的落叶,也不必说黄昏漫天的红霞,单是午后窗沿下斜长的影子也足以让人魂牵梦萦了.
不必说学校里的的楼台,翠绿的竹林,流淌的小河,绿叶片片的树林,也不必说朗读的声音从小林里飘起,蓝球场上你争我夺的场面,教室里飘出的歌声,单是那学生们走出校园,在阳光下面,就有无限的生机和朝气.
不必说春天那花有多美丽,也不必说春天的草有多绿,单是那可爱的小鸟在树上叽叽喳喳地叫着,就有浓浓的春意.

1个3=3.2个3=6 依次类推,第十个=30,就是说个位数是0

ecause of the new car ,Dad has no need to go to crowded bus and our family can go and travel during the vacation .

you needn't be anxious about the test

不必说哈尔滨的冰灯,也不必说云南的石林,单是各地的名小吃,就是外国游人来中国观光的重要原因之一!
2．不必说这里多么凉爽 也不必说这里多么秀美 单是这湛蓝的天空 就足够让你流连往返了
3．不必说那金碧辉煌的布达拉宫,也不必说那冰雪覆盖的天山,单是那一望无际的碧草蓝天,就够我们陶醉了
4．小x说：不必说处理这个问题有多么困难,也不必说你肯不肯帮助我,但是只要我下定了决心,始终坚持不懈地努力干下去,就有一天能够攻破这道难题.
5．不必说数学12道题要做,也不必说英语20个单词得默,单是语文的一篇作文就有一个多小时的时间,您想,我得什么时候睡觉呀!
6．古屋里尽是历史的痕迹,不必说那唐朝的瓶,也不必说那宋代的画,单是那清朝的瓦即可价值连城.
7．不必说学校里的的楼台,翠绿的竹林,流淌的小河,绿叶片片的树林,也不必说朗读的声音从小林里飘起,蓝球场上你争我夺的场面,教室里飘出的歌声,单是那学生们走出校园,在阳光下面,就有无限的生机和朝气.

2.正弦量的大小和方向都随时间不断变化,因此不必选择参考方向.A.错误
3.在三相三线制电路中,不管负载是否对称,也不管负载接成Y形还是△形,都可以采用两表法测量三相有功功率.B.正确
4.三相负载作星形连接时,无论负载对称与否,线电流必定等于相电流.B.正确
5.交流电表测得交流电的数值是平均值.A.错误

解题思路：控制变量法是化学实验探究常采用的方法，其原理是通过控制变量的方法，把多变量的问题变成多个单变量的问题而进行逐一探究．

影响物质溶解性的因素有溶质的性质、溶剂的性质、温度．而溶质颗粒的大小只是会影响溶解速度的快慢对结果没有影响．因此在探究白糖与氯化钠溶解性大小时，需要控制的变量有温度、溶剂的质量、种类及溶解的状态．
故选C

点评：
本题考点： 固体溶解度的影响因素．

考点点评： 本题主要学生对影响物质溶解性因素的理解和控制变量法的应用，掌握影响物质溶解性的因素是解题的关键．

Rainstorm is a certain time of great intensity rain. If the 3rainfall over 16 mm, or 12 hour rainfall of 30 mm, or 24 hour rainfall over 50 mm, called storm. Heavy rain, especially large-scale persist...

.(1)“片云”“孤月”意境凄凉,流露出作者孤独、苦无知音的烦闷；“落日”“秋风”意境雄壮、开阔,又体现了作者“烈士暮年,壮心不已”的乐观旷达.(2)开放题,言之成理即可.答“自强不息”的要联系“落日心犹壮”,答“怨愤”的要联系“不必取长途”.

从集合中元素来考虑：比如元素1
它可以出现在A中,B中,C中,AB中,AC中,BC中,或全都有
总之不可能三个集合都没有
因此元素1存在情况有2^3-1=7种
其它元素也一样
所以这样的三元有序集合组为（7^n)个

为了采集眼前的花朵而花费太多的时间和精力是不值得的,因为未来的道路依然在曼延,前面还有更多的花朵等待着,就让我们这样一路走下去.

B

C ₅ H ₁₀ O ₂ 的羧酸，看作丁基和羧基结合，丁基有四种，故该羧酸的同分异构体有4种。

应该没有答案啊.这四种都存在安全性问题.
二倍体转基因鲤鱼可以正常减数分裂产生配子.能与正常鲤鱼杂交.
我看网上也有几套试题也是这个题目,一样的,都说是二倍体转基因鲤鱼.
是不是都搞错了?
如果A改为三倍体,就选A.

1、因为在遥远的地平线上,威严地站立着的,已不是冷酷的冬,春天已经悄然来临.
2、伟大指的是老叶融为春泥滋润新叶成长的献身精神.充满希望指的是南国的春天里万物焕发蓬勃生机
3、载生动形象地表现出南国万物生命力之蓬勃强大.
4、更欣赏南国的落叶,它不似北国落叶之悲壮,它是愉快的献身,雄壮豪迈,没有悲戚.

等量关系：
中间花圃面积等于大长方形面积的一半

1. make a mistake
2. make a plan
3. let me guess
4. express gratitude to sb/ say thanks to sb
5. say hello to sb.
6. greet sb.
7. think of
8. think about
9. don't have to/don't need to
10. match A and B

希望对你有帮助

“力恶其不出于身也，不必为己”，这是说人们在共同劳动中以不出力或少出力为耻，都能尽全力地工作，却没有“多得”的念头。

You do not need to understand my loneliness,you do not understand my loneliness.You just know in my heart you have been very important things that I promise you will not forget,I will certainly do so

“略”。（答案不唯一）

解题思路：A、根据地球表面大多被水覆盖，人类可以利用的淡水占总水量的2.53%解答；
B、根据硬水洗衣服，既浪费肥皂，还洗不干净解答；
C、根据过滤的原理解答；
D、根据煮沸可以降低水的硬度解答．

A、地球表面大多被水覆盖，人类可以利用的淡水占总水量的2.53%，人类可以利用的淡水占总水量的不到1%，要节约用水，故错；
B、硬水洗衣服，既浪费肥皂，还洗不干净，故错；
C、过滤能除去水中颗粒较大的不溶性物质，故对；
D、活性炭具有吸附性，吸附只能吸附色素和异味，不能改变水的硬度，故错．
答案：C

点评：
本题考点： 水资源状况；过滤的原理、方法及其应用；硬水与软水．

考点点评： 本题考查内容较为简单，属于对课本基础知识的考查，训练同学们的识记能力以及爱护水资源和节约用水的好习惯．

Gothic culture and the Gothic rock / metal music what "Gothic"? First, literally interpreted, it embraces the three significance, the first in the Gothic architectural style as Cathedral (cathedral), the biggest feature is the tall arched ceilings and structural beams and Tsim Sha Tsui; Second, in Gothic literature is used to describe those dark lonely places (such as abandoned Castle) to the background of a strange mystery adventure story; Third, also on behalf of a Gothic font and vocals of printing and writing style. The earliest "Gothic" this characters is based on the Renaissance period was used to distinguish the Middle Ages (Middle Ages,5~15 century) art style its the Exaggerative is from in had the Y2K 3 ～ 5 century aggression Italy and the dismantlement of the Roman Empire the German Gothic tribe, in the 15th century, Italy person with the revitalization of in ancient Rome culture of idea of thus whip up the splendid literature and movement, as Italy person to Gothic nation to destroy the Roman Empire during this period of history two lovers whose source is always difficult to-plussed when, therefore of order in connection with this period to targeting a specific audience sector, they will cast the Middle Ages the arts style titles for Gothic, as they were concerned means that the barbaric. Despite the original Gothic is the word carries with it a negative connotation, but in fact impressive and beautiful works of art have been created out at this time. 12 century, the construction of sophisticated technology, thus creating a lot of the birth of Gothic cathedral, it is the most famous Notre Dame Cathedral in Paris (Notre Dame). Of course, the Gothic style was not limited to construction, such as sculpture, glassware, jewelry and colorful tie is responsible and so on, are affected by such art from the 12th century to the early 16th century has ended. Gothic art in fact religion plays a very important role, regardless of the artist or sculptor, in that they would prefer to work on religious issues, themes and less interested in realism. About in the Year in 1800 around the latest arrival Romantic Movement (Romantic Movement), Gothic with the medieval culture is again being people's pro-have altered history textbooks to mislead the ideology able to to recover and Romanticism can be said to be For the Enlightenment Movement (the Enlightenment) rationalism (Rationalism) reactionary, perceptual, non-rational attitude is this the campaign centers in this period, Gothic started and darkness, singular, weird found in relation to, in fact grand romantic style the are many symbolic and subject matter and these Gothic the sub-culture of a rather similar, this period of some writers very keen on Description people's darkness, emptiness face, sexual paranoia, terror, a god themes are literary works were widely to use. In addition, in the visual arts, Romantic painters prefer the same dark, desolate landscape. In a symbol of Gothic novels is the most typical vampire (vampire), the works of Bram Stoker's classic "Dracula", and even joined the Vampire images in the book, for the development of the 19th century Gothic literature is entitled to the origins of vampires.
Time came to the 1980s, new Gothic movement started in Britain did the Gothic movement there might be considered on the previous Cyberpunk culture (Punk), a reactionary, no matter how, Gothic spirit started in music to demonstrate its influence, Gothic music the same preferences to encourage the darkness and emptiness face as a title, and of death also has a strong interest, the slow, sad and even terror are its music features, and vampires again become the theme of the best symbol. In addition to the musical performance of the Columbia mission groups in the visual artists showing dead aesthetics, such as a pale face painting, black clothes, or the British Zhebian 19th century Victorian-style clothing, and the ruins of medieval, Gothic-style buildings have been extensively applied. Gothic movement in the United Kingdom reached a peak in the mid-1980s, and most representative of the Orchestra of The Sisters of Mercy, The Mission and other Fields of the Nephilim. Musical styles, the music of this period was known as the British New Wave Gothic, adding in a lot of rock synthesizer (keyboard), and the above mentioned Gothic elements, even with electronic flavor. Wave and Gothic rock/New imported in the United States in the further development of industrial branches, known organizations such as Ministry and Nine Inch Nail; The other hand, Europe is even more flooding to electronic music. Although Gothic music in Europe towards more electronic music, but also a number of other deformation, but in fact Gothic metal music is brewing in the early 1990s, and finally in 1995 by the Norwegian Theater of Tragedy regiment's first album 80 of the same name metal era of Gothic atmosphere. But at the beginning of talks Gothic metal ago, we had to start with the destruction of metal (doom metal) came, doom metal is a very heavy, dark, slow, melancholy and sadness in the music form that was doom metal earliest origins can be traced to Black Sabbath's first album the same name, and the subsequent album, but really doom metal style set is from Sweden regiment Candlemass in 1986 published the album began. A lot of doom metal group in the late 1980s to the early 1990s when the birth of the famous British regiment My Dying Bride then more will be included in the preparation of the violin as a bleak future reference Orchestra sent doom metal pioneer.
And doom metal in the 1990s, many have begun the development of Theater of Tragedy is the first to doom metal and gothic rock from the inspired fusion of the gothic and then create a new school doom metal and T.O.T. Can be said to be a rejuvenation of the most important Gothic style hero once again, T.O.T. Gothic metal makes this wave of success from the Nordic spread quickly from the beginning. Theater of Tragedy several characteristics have become Thereafter Columbia mission metal basic elements, in particular, has become today the mainstream style of gothic death, such as mining death metal brutal men cavity (or even black metal Tsim roar black cavity) match Sophie beautiful women sounded the antiphonal singing form, it is precisely Israel romantic Gothic spirit of this contrast style but also a symbol of darkness (dead space and metal Le part) with a bright future, life and love (female sounded, piano and symphonic part) between confrontation. And T.O.T. Soprano lead singer Liv arms and the beauty of her singing did not know how much steel already conquered the hearts of men. But European countries because of cultural differences, making gothic metal is also developing even spread out in many different forms, apart from gothic doom, in the Netherlands from The Gathering has established himself as a gifted beautiful women sounded as lead singer and focus on spiritual feeling, the pure gothic metal, its lead singer Anneke van Giersbergen unsubstantial and muddied U.S. tone can be described as gothic metal sector perfect example later, in the other two the Dutch gothic metal Mission Within Temptation and After Forever, have to have timbre approximate Anneke of the nest and singing a saying, The Gathering of Dutch gothic metal shows the influence. The Gathering is a gradual change in the near future, however style metallic components has become increasingly short. In addition, the Nordic Orchestra further to be some black metal with elements of gothic Among become gothic black and renowned orchestras have the same from the Norwegian Tristania and The Sins Of Thy Beloved, etc. However, in fact, gothic in the Nordic development has been to gothic, doom, death, black integrated, and so difficult to categorize in a single style, such as Tristania Apart from the grand symphonic stature, or even using clean men cavity, black dead space plus opera female lead singer and choir chorus. Of course, the Nordic Music Orchestra has not only was it thought Sweden Therion will be to develop a distinctive orchestral instruments (synthesizer sound samples) and metal instruments of both symphonic opera metal, in its most recent concert are completely Opera Choir and professional men and women. In addition, Finland As Divine Grace Chen Jing elegant atmosphere gothic to go through the ups and prosperous world feel. Germany were developed in classical gothic folk kingdom come, Lacrimosa, Haggard, in addition to these groups synthesizer, but also for the actual music, classical flavor is very strong, as Lacrimosa directly with the London Symphony and the Orchestra includes members of Haggard's hand or even 18. Italian avant-garde in recent years to speed metal and symphonic metal gained bombs in the whole of Europe, but its Gothic metal in the development of not falling behind, Inner Shrine, the argument is a prime example, the former U.S. sorrow desolate atmosphere, which is filled with romantic and charming melodies. In addition, there are also some focus on the atmosphere created by the orchestra, filled with a sense of medieval Dunwich and Crown of Autumn, which Dunwich more use of musical instruments and medieval monks choir. Other European countries also have representation of the orchestra, such as Poland, Sirrah, the Even Song Hungary, Romania On Thorns I Lay, style are completely different. From the above introduced can understand, the Columbian the Independent Commission on the metal Lok has been a comprehensive development no longer confined to a single style, while Gothic is not just a rock, it is most of all a life attitude, Gothic is one which people can to flee reality and enter the illusion the world, a dark and romantic the world, Gothic the spirit of not only can manifested in music, can also in their attire artistically and literature, with a great number of lace. The clothes, symbol of a romantic Rose, graves, are connected with vampires, witches, ruins, Gothic's Cathedral so on, have all these are Gothic of symbols. Of course, purely from a musical point of view, the general preference of the strong metal fans directly, it may slow, focused atmosphere of Gothic metal play more difficult to accept, but if it gets to the root of this music to understand the background and send their wish has moods, appropriately adjust your own mind, he may realize that a different type of feeling and fun to listen to.

1.不必说哈尔滨的冰灯,也不必说云南的石林,单是各地的名小吃,就是外国游人来中国观光的重要原因之一!
2.不必说这里多么凉爽 也不必说这里多么秀美 单是这湛蓝的天空 就足够让你流连往返了
3.不必说那金碧辉煌的布达拉宫,也不必说那冰雪覆盖的天山,单是那一望无际的碧草蓝天,就够我们陶醉了
4.不必说雄伟颐和园,美丽的花园,热闹的公园,繁华的游乐园,也不必说高耸的山峰,浩瀚的大海,广阔的草园,单是田野中的小小池塘,就可以让人乐而忘返
5.不必说学校里的的楼台,翠绿的竹林,流淌的小河,绿叶片片的树林,也不必说朗读的声音从小林里飘起,蓝球场上你争我夺的场面,教室里飘出的歌声,单是那学生们走出校园,在阳光下面,就有无限的生机和朝气.

1、不必说蓝蓝的海水,柔和的阳光,来往的帆影；也不必说海浪的翻滚,沙滩的柔软,海滩的喧闹.单是迎面徐徐的微风,就使人心旷神怡.
2、不必说翠绿的青山,苍劲的松柏,浮动的白云,湛蓝的天空；也不必说夜莺在婉转地歌唱,各色的野花在风中摇摆,美丽的蝴蝶在花丛中舞动.单是一颗刚起嫩芽的小草就足以令人欣慰.
3、不必说奇特的亭台楼阁,清澈的湖水,活泼的小鱼；也不必说杜鹃在树上清脆的歌声,草蜢在草间不停地跳跃,辛劳的蜜蜂在花丛中飞来飞去.单是一株盆花就有无限的享受.
4、不必说举世闻名的兵马俑,古色古香古城墙,晨钟暮鼓的钟鼓楼,也不必说幽静美丽的兴庆宫,庄严肃穆的历史博物馆,烽火戏诸侯的烽火台,单是小小的碑林,就让我感慨万分.
5、过年了!不必说漂亮的新衣,琳琅满目的年货,新鲜可口的蔬果；也不必说小孩子们在空地上玩耍,秧歌队在村里载歌载舞.单是那在夜空中绽放的烟花,就有无限的喜庆氛围.

1，用2种颜色。则有C4 2 乘以A2 2共12种
2，用3种颜色。则有C4 3乘以A3 1乘以A3 3 共72种
3，用4种颜色。则有C4 4乘以A4 1乘以A3 2 乘以2共144种
所以有228种

I like riding bike ,but since I went to school,I have had to say goodbye to it for I lived in the school without riding.In the middle school,some classmates went to school by bus which I think is bad.On one hand ,it does no good for health,on the other hand,it may pollute the enviroment.So,riding bike to school is better than taking bus.I wish people can take more time riding bike than taking bus to protecgt our inviromnet and our health.

解题思路：作∠MEF=∠ABC，在以EF为一边在外侧再作∠FEN=∠ABC，即∠MEN=2∠ABC．

如下图：
，
∠MEN=∠2ABC．

点评：
本题考点： 作图—复杂作图．

考点点评： 此题主要考查了复杂作图，关键是熟练掌握作一个角等于已知角的方法．

军军发表议论说：“既然‘金无足赤,人无完人’,那么我有缺点和不足是可以理解的,不必非改正不可.” 这种观点是不对的,人都可能犯错,没有人能够做到不犯任何错误.金无足赤,人无完人.我们不能苛求自己和别人什么事情都...

解题思路：（1）从三角形的三个顶点，分别向直线a引垂线，并延长相同距离，得到三个对应点，顺次连接就是所求的轴对称图形；
（2）把身边所见物体，用图形拼接出来．如房舍．

（1）所画图形如下所示：


（2）参考图案：太阳温暖我的家．

点评：
本题考点： 作图—应用与设计作图．

考点点评： 考查了作图-轴对称变换，注意画轴对称图形的关键主要是轴对称的性质，即对应点到对称轴的距离相等．（2）问给学生提供了充分发挥自己的想象力与创造力的机会，同时也是数学知识的一次实际运用机会．

A．格式有两处错误：“敬礼”应移到下行顶格写。应将署名与日期调换位置。
B、 正文病句改正：
（1）“我恨不得一下子很快飞到您的身旁”，删去“一下子”或“很快”。
（2）“通过您多年对我的谆谆教导，使我各方面都有了很大进步”，删去“通过”或“使”。
（3）“请务挂念”的“务”错别字，应改为“勿”。
（4）“老师要填报兴趣班申报表”应在“要”后增加一个“我”。
（5）“我准备报名音乐兴趣班”中“报名”改为“填报”，或者删去“名”。
C、“务必”不得体，可删去。因为“务必”一般是用于上对下的要求。
（共4分。改对1 处得1分，给满4分为止。如有其他改法只要合理亦可给分）

要求学生了解常见的病句的类型、学会使用修改符号对病句加以规范修改，并学会修改语段。

You don't have to do this.

师不必贤于弟子,闻道有先后,术业有专攻

Can you cook when you are 13?
You don't have to meet him,but I have to.
She can drive,but cannot ride.
Tom is able to write a letter.
You cannot go playing until you finish your homework.

You needn't returned the book immediately

英语语法新思维（新东方）

对水平地面产生的最大压强为多少帕?
要最大压强.从表面看,水要装得多,越重,底面积最小,压强就大.其实,从本题来看,只要高度最大就行,与底面积大小无关,宽40厘米做容器底面周长.长160厘米作容器的高,160厘米=1.6米
水的密度×g×高：
1000×10×1.6
=16000帕
最大压力为多少牛?
要使是压力最大,只要容器体积大,装的水最多就行,
当然,用160厘米做底面周长 底面边长为 160÷4=40厘米=0.4米 体积为0.4×0.4×0.4=0.064立方米
压力就等于水的重力 密度×体积×g=重量
1000×0.064×10=640牛

不必说翠绿的青山,苍劲的松柏,浮动的白云,湛蓝的天空,也不必说夜莺在婉转得歌唱,麻雀在喳喳的嬉戏,美丽的蝴蝶在风中舞动,单是一株不起眼的小草就足以令人心旷神怡,它是那么嫩绿,那么坚强,迎着凛冽的寒风昂然挺立.

不是

不对.提笔忘字就是最明显的后遗症.

雨霖铃·寒蝉凄切
朝代：宋代
作者：柳永
　　寒蝉凄切,对长亭晚,骤雨初歇.都门帐饮无绪,留恋处,兰舟催发.执手相看泪眼,竟无语凝噎.念去去,千里烟波,暮霭沉沉楚天阔.
　　多情自古伤离别,更那堪冷落清秋节.今宵酒醒何处?杨柳岸,晓风残月.此去经年,应是良辰好景虚设.便纵有千种风情,更与何人说!

Friends needn't to be the same.

分析：以均匀杆的中点为原点,建立沿：指向M的方向为x正方向,均匀杆向上方向为y正方向.x0d在杆上任意取点P,P距离原点为y,x0d研究y到y+dy一段微小量dy 其质量为dm=dyρ ,dy到M点的距离为rx0dr=(a^2+y^2)^(1/2)x0d质量为dm的微小量dy对M的引力dF=GMdm/r^2x0d方向为M指向P,dF 在x方向分量dFx 在y方向分量dFyx0d再在上取另点P’,P’距离原点为-y,P’和P关于原点对称x0d并且采用同样方法取一段微小量dy’,得出dF’x0ddF’ 在x方向分量dFx’ 在y方向分量dFy’x0d由于dFy和dFy’的数值相同方向相反所以对M的引力作用抵消,因此在计算中只需要计算dFx的积分值Fx即可