在偏远农村，人们常常利用自己架设的电视天线接受电视信号，而在雷雨天气里使用这种天线，不但无法正常看电视节目有时还会成为雷

【摘要】本文通过多年教学的总结,发现偏远山区初中孩子对初一的数学学习不够重视和深入,不能有效地掌握好初一的知识,而导致到初二、初三无法正常学习的状态进行分析、总结,并结合本地实际提出了自己的几点看法而展开阐述,以改变偏远山区孩子的学习状况.【关键词】初一数学,发掘,总结,收集,讨论培养从教多年,大多数数学老师都深深地认识到,初中数学是一个不可分割的整体.（剩余2590字）

A monastery,located in the remote,incense has been deserted.
That day,an uninvited guest to the monastery.Shabbily dressed man,bearing out of the ordinary.The other side say that they pass by here,the car broke down,the vehicle driver now that he take a look into the temple.
Master accompany visitors around everywhere.Walking,Master ask guests to a question:"How can we rid our own desires?"
Master smiled and folded into the body inside the room that used to Bajian Zi,the guests said:"The donor,please come with me!"
He visitors to the temple outside the hillside.Guests see the mountain is covered with shrubs,but also to see the shape of the tree pruning Master.
Master Ba Jianzai to the guests,said:"As long as you can always like me repeatedly pruning a tree,you will eliminate the desire."
Guests took scissors to doubt,to a Congguan Mu,Kachakaca to cut up.
The effort over a pot of tea,the Master asked him how to feel.Guests smiled:"The body was feeling a lot of easy stretch,but the day-to-day to plug into my mind as if the desire of those who did not lay down."
Master nodded and said:"This is just the beginning.Pruned regularly,that's enough."
When visitors walk,he agreed with the Master to ten days later.
Master do not know,the visitor is subject to the most-famous entertainment mogul,he has never encountered before experienced business problems.
Ten days later,to a tycoon; Sixteen days later,here we go again ......Tycoon three months have passed,the tycoon has become a tree pruning shrubs shape of a bird.Master asked him,whether now know how to eliminate the desire.Look of shame to face with mogul replied that I may be too crass,now cut each time,to calm,with no Guaai.However,from here you leave and return to the circle of my life,all my desire to still come out as usual.
Master laugh and not words.
When the barons of the birds forming completely,Master,he also asked the same question,his answer remains.
This time,Master of the tycoon said:"The donor,you know why I suggest that you had to trim trees?I just hope that every time you cut,can be found,some of the original cut will come again.This As we desire,you do not expect to completely eliminate.We can do is try to trim it more attractive.Laissez-faire desire,it will be like this Manpo the soaring shrubs,ugly state.However,regular pruning can be A pleasing landscape.Fame and fortune for as long as the proper way,by the way,the self-hui,it should not be seen as the spiritual shackles."
Tycoon come.
Since then,as more and more the coming of pilgrims,temples around the bush Yi Keke has been cut into various shapes.Sheng incense here gradually,increasingly well-known.

One of my friends whose mom is a tailor lives in a remote village.The roads in the village are very muddy with so many weeds besinds them.I hear from her every week.Several days ago,she wrote to tell me that the river in the village dried up and many trees dried out.I think people who need help have the privelege of getting help,so I made some arrangements and requested my friends who do paperwok to participate in my activity. We volunteerd to donate lots of money to the villagers so that they can buy seeds. I will use tractors to give the seeds away to the villagers or otherwise in two weeks. （楼主.你这段话逻辑有点问题.）

1、是文章的关键词，是文章的核心，贯穿文章始终。
2、批评和鼓励同在。
3、用辛劳和母爱关怀下一代，期盼知识，摆脱贫穷。
4、农村走向城市的变化未向母亲汇报。

解题思路：通过理解题意可知本题的等量关系，即“圆珠笔和钢笔共8支”和“圆珠笔每支1元，钢笔每支5元的情况下共用去了20元钱”，根据这两个等量关系，可列出方程组，再求解．

设苗苗同学买了圆珠笔和钢笔分别为x支，y支，
则

x+y＝8
x+5y＝20，
解之，得

x＝5
y＝3．
答：苗苗同学买了圆珠笔5支，钢笔3支．

点评：
本题考点： 二元一次方程组的应用．

考点点评： 知道总价=单价×数量及其变式是解本题的关键．

1、（时间）（19岁,后来、其后、40年过去了、现在）2、懵懵懂懂在母亲的慈爱的目光和温馨的微笑中长大,岁月的操劳带给母亲两鬓的白发和眼角的皱痕,作为孩子,心安理得接受着母亲无私的爱,却连母亲的名字是什么这么一个最基本的问题都没关心过,19年才理解到母亲对孩子的爱,作者感到羞愧,但此刻作者长大了.3、母亲生活那个时代,男尊女卑让女子在出嫁后就没有了自我,只能附庸于夫家,连自己的名字都不能再担了.4、其后我考入山东师大,父亲病逝,家里只剩下母亲一人.

闻道龙标过五溪
五溪为湘黔交界处的辰溪、酉溪、巫溪、武溪、沅溪；在唐代,这一带还被看作荒僻边远的不毛之地,也正是王昌龄要去的贬所.
即使不知道这些地理资料,从‘五溪’也可以看出地方的偏远.

解题思路：通过理解题意可知本题的等量关系，即“圆珠笔和钢笔共8支”和“圆珠笔每支1元，钢笔每支5元的情况下共用去了20元钱”，根据这两个等量关系，可列出方程组，再求解．

设苗苗同学买了圆珠笔和钢笔分别为x支，y支，
则

x+y＝8
x+5y＝20，
解之，得

x＝5
y＝3．
答：苗苗同学买了圆珠笔5支，钢笔3支．

点评：
本题考点： 二元一次方程组的应用．

考点点评： 知道总价=单价×数量及其变式是解本题的关键．

1、瞎婆婆给的“两元钱”或一元钱；取之不尽，用之不谒，永不贬值的精神财富（或者让我懂得了如何用一颗真诚的爱心去对待身边的每一个人。 ）（意近即可）
2、倒叙；父老乡亲往我家送钱；瞎婆婆来我家送钱。
3、只要符合瞎婆婆身份的描写句子，即可得分。
4、（1）说明瞎婆婆年事已高，动作缓慢，同时这也是瞎婆婆对这来之不易的“两元钱”作出重大决策的表现。
（2）我被瞎婆婆的举动感动了，深知瞎婆婆送这“两元钱”的深情厚意，所以这是不能自已的表现。
5、都明白了瞎婆婆说的“两元钱”为什么会变成手中一元钱的缘由；或者明白了小商贩欺骗瞎婆婆，说好是两元钱，而实际只给了一元钱的事情。（意近即可）
6、作者写老婆婆的不幸遭遇和生活艰辛，是为下面一元钱的故事作铺垫；突出贫穷艰辛的老人心灵的真诚、慈善。（意近即可）

小题1:表面上看这笔财富是指瞎婆婆给我的“两元钱”或一元钱 ，而实际上是指乡亲们，尤其是瞎婆婆无私地帮助我，让我懂得了如何用一颗真诚的爱心去对待身边的每一个人。这才是一笔永不贬值的精神财富。（3分）
小题2:①说明瞎婆婆年事已高，动作缓慢，同时这也是瞎婆婆对这来之不易的“两元钱”做出重大决策的表现。（意思接近即可）②我被瞎婆婆的举动深深地感动了，深知瞎婆婆送这“两元钱”的深情厚意，所以这是不能自已的表现。（3分）
小题3:都明白了瞎婆婆说的“两元钱”为什么会变成手中的一元钱的缘由。或者明白了小商贩欺骗瞎婆婆，说好是两元钱，而实际只给了一元钱的事情。（3分）
小题4:从我和母亲、小商贩两方面作答（符合文章的题旨，语言通顺，即可给分）（3分）


小题1:

点评：本题不难，人物所表现的状态易于分析理解。分析人物，动作行为是一个重要的分析点，人物的动作行为往往是人物生理心理状态的外在表现。
小题3:
试题分析：“多么奸诈的小商人，他们竟伤天害理地欺骗一个孤苦伶仃的老婆子！”此句作了很好的说明：老婆婆被骗。
点评：本题不难，文章有关键句有助于理解。理解此类问题，要从情节入手，了解与问题相关的情节，结合人物的表现，体会理解，得出答案。
小题4:
试题分析：抓住最后画龙点睛一句“懂得如何用一颗真诚的爱心去对待身边的每一个人”爱永不贬值。
点评：本题不难，最后一句提示明确。不少的文章采用卒章显义的写作，最后通过抒情议论点明文章的主旨，要学习这种写法。

海水是液态的，变为水蒸气，液态变气态，是汽化现象；
水蒸气形成小水珠，小水珠是液态的，气态变液态，是液化现象；
水滴受到竖直向下的重力，所以会向下滑．
故答案为：汽化；液化；重．

1.行业劳动生产率的提高,劳动力使用的减少,人员流向其他行业（哈哈,偏题了）
2.多学习其他行业的知识和技能

我的家,虽然偏远,山路泥泞颠簸,丘丘壑壑,但是这儿的山却清新秀丽.天空也呈现柔蓝色,美极啦!

父亲与梨树
吃苦耐劳,做事不顾身体
表达我对父亲的思念之情

这种药品要求在低温环境下存放，要求运输过程中尽可能不从外界吸收热量，故包装盒应具有导热性能差的特点．
故选A

There was a very mysterious place wich locates in a remote village.It was said that there lived an incredible fortune-teller.I walked into her house,feeling very supernatural and a bit scared inside.I noticed the fortune-teller was sitting at a little round table with a crystal ball in hand.(觉得原文不太连贯,自己加了一点哈,不介意吧：我注意到那个算命人手里拿着水晶球坐在一个小圆桌旁.）She asked me to sit down and after that she began to talk:"my dear lady,though you are ordinary now,you will find your own soul mate when you are grown up."I was surprised,but I hoped what she had said was true.
应该是“她”吧~恩,故事一般用过去时,我就全用过去时了,

解题思路：通过理解题意可知本题的等量关系，即“圆珠笔和钢笔共8支”和“圆珠笔每支1元，钢笔每支5元的情况下共用去了20元钱”，根据这两个等量关系，可列出方程组，再求解．

设苗苗同学买了圆珠笔和钢笔分别为x支，y支，
则

x+y＝8
x+5y＝20，
解之，得

x＝5
y＝3．
答：苗苗同学买了圆珠笔5支，钢笔3支．

点评：
本题考点： 二元一次方程组的应用．

考点点评： 知道总价=单价×数量及其变式是解本题的关键．

.蒸发；液化；重力

分析：海水在阳光的照射下会很快的蒸发变成水蒸气，水蒸气遇冷又会液化成小水滴，然后在重力的作用下滑落至最低处后滴入水桶中，得到淡水．
（1）阳光照射使池内海水加快蒸发，形成水蒸气；
（2）水蒸气在塑料膜上液化，形成小水滴；
（3）塑料膜下表面结成的水滴受重力的作用滑到最低处后滴入水桶中，得到淡水；
故答案为：蒸发，液化，重力．

1、我要用火柴来点燃木材用来升温
I want to use matches to kindle the wood to heighten the temperature.
2.我在一个偏远的山村,我想知道外面的世界.
I live in a lonely valley,I want to know the world outside.

解题思路：（1）蒸发属于汽化的一种，是发生在液体表面的汽化现象；蒸发的快慢与三个因素有关，即：液体的温度、液体的表面积、液体表面的空气流动；
（2）水蒸气由气态变为液态的水，是液化现象．

（1）阳光照射使池内海水的温度升高，从而加快水的蒸发；
（2）温度高的水蒸气上升，碰到塑料薄膜，就会液化为液态的小水滴；
故答案为：（1）蒸发；（2）液化．

点评：
本题考点： 水的三态变化．

考点点评： 温度影响蒸发快慢，温度越高蒸发越快；温度较高的水蒸气遇到温度相对较低的物体会发生液化现象．

Buck was judge of a dog's miller,after a civilization has been living in the United States,a warm southern California in the valley.After being sold to North America,abounds in gold of cold remote Alaska,into a sled dogs.It is human,and saw the dog dog,strong and weak between life and death struggle and ruthless,so in order to survive,it learned to live,but regardless of moral principle,becomes combative and tact and cunning.Finally,in the forest,the calling of backsliding,buck Wolf fled into the wilderness,and return to the jungle.In the novel,jack London using a technique,put the dog in the eyes of the world and human nature of incisively and vividly depict,reflect capitalism cold reality and "survival of the fittest" objective reality.Buck desire and ran to the free,this also is the ideal and pursuit of the writer.
This is the famous American modern realist writer jack London (1876 - - 1916) writing the novel of the call of the wild stories.

应该用过去时
A King traveled to a remote country.The road was rugged and there were a lot of gravels which made the King's feet painful and tingling.So he commanded after returning to the royal palace that all the road should be covered with leather.He believed that this would benefit not only himself but also all the people,because everyone would never suffer the pain while walking outside.
But even after he killed all the cattles in the country,he was not able to get enough leather.And also,the labor power and money were wasted.Although the command of King was impossible,even foolish,people could do nothing but shake their heads and sigh.
A clever servant boldly put forward suggestions to the king:"My king!Why do you want to scrifice so many cattles,waste manpower and money?why don't you just use two small pieces of leather to wrap your feet?"
The King immediately understood,withdrew his command,and adopted the servant's advice.
It is so difficult to change the world,but changing ourselves is very easy.Do not always wish to change the whole world,but try to alter ourselves--just wrap our feet up.Your world will change in your eyes after you put yourselves in a different position.
几乎每句都有改动,有些句子是意译的,语句保证通顺

解题思路：（1）利用Q_放=mq求整瓶液化气完全燃烧放出的热量；
（2）已知放出的热量有50%被利用，用这些热量加热水，知道水的比热容和水的温度升高值，利用吸热公式求水的质量．

（1）整瓶液化气完全燃烧释放热量：
Q_放=mq=20kg×4.2×10⁷J/kg=8.4×10⁸J，
（2）由题知，Q_吸=c_水m_水△t×50%=8.4×10⁸J×50%=4.2×10⁸J，
水的质量：m_水=
Q吸
c水△t=
4.2×108J
4.2×103J/kg．℃×(100℃−20℃)=1.25×10³kg．
故答案为：8.4×10⁸；1.25×10³．

点评：
本题考点： 热平衡方程的应用．

考点点评： 本题综合考查了水吸收热量的计算和燃料燃烧放出热量的计算，利用好Q吸=Q放是关键，因条件已给出，难度不大．

解题思路：海水在阳光的照射下会很快的蒸发变成水蒸气，水蒸气遇冷又会液化成小水滴，然后在重力的作用下滑落至最低处后滴入水桶中，得到淡水．

（1）阳光照射使池内海水加快蒸发，形成水蒸气；
（2）水蒸气在塑料膜上液化，形成小水滴；
（3）塑料膜下表面结成的水滴受重力的作用滑到最低处后滴入水桶中，得到淡水；
故答案为：蒸发，液化，重力．

点评：
本题考点： 蒸发及其现象；液化及液化现象；重力的方向．

考点点评： 解决此类问题要结合蒸发和液化的物态转化进行分析解答，知道重力的方向是竖直向下的．

1 The nearer the river approach the sea,the wider it is.
2 I don't know whether I should turn left or right.
3 We saw the light in the distance.
4 In a remote area,Bob get the car fixed.
1选B,是确认的意思
2选C,anyone who=whoever,任何人
3选A,意思是你和同学交往融洽让你父母满意,从句是一个陈述句,不用疑问代词

这便是中心句：一帆风顺的旅途只能酿就墨守成规的思维,而人生中的捷径从来都是在经历了颠簸与坎坷之后赫然闪现.
其实,中心句一般出现在片尾和篇末,出现在中间的话就得好好辨别一下了

据报道,一场可怕的龙卷风袭击了这个偏远的村庄,造成了巨大的损失
According to reports,a terrible tornado struck the remote villages,causing a great loss

Dear Li Hua,
I heard that you had moved to Shanghai recently.It seems that you need some more time to adapt to the life in metroplitan city.Country life is quiet and slow.The beat in Shanghai is so fast that it will take you some time to make yourself roll in it.
To be frank,I have the same feeling as you when I moved to New York.I was born in a little farm in the rual area.I still remember the first day at school when I went to the new schools.All the students looked fashionable while I was too out-of-date to chase their style.I felt a bit self-abased and didn't want to talk to anyone.However,one month later,I became accutomed to the life style there.The new students were willing to help me themselves.I was more and more confident.
I am sure you were in the same condition as I was in that peroid.Believe me,if you are given some time,you will be better soon.Try to communicate with each other.You will be involved in the new surrounding soon.
Best Regards
Tom

31.表面：瞎婆婆给的“两元钱”或一元钱.实际：取之不尽、用之不竭、永不贬值的精神财富,它让我懂得了如何用一颗真诚的爱心去对待身边的每一个人.
32．倒叙.略写：父老乡亲往我家送钱.详写：瞎婆婆来我家送钱.
为的是更好地表现这“永不贬值的财富”
33．(只要符合瞎婆婆身份的描写句子,就可以得分的.) 比如：她骨瘦如柴,眼睛深深的陷在眼眶中,双手在空中不停的颤抖.（这个问题比较主观,如果你自己还有更好的形容就用你自己的）
34．①说明瞎婆婆年事已高,动作缓慢,同时这也是瞎婆婆对这来之不易的“两元钱”做出重大决策的表现.
②我被瞎婆婆的举动深深地感动了,深知瞎婆婆送这”两元钱”的深情厚意,所以这是不能自已的表现.
35．都明白了瞎婆婆说的“两元钱”为什么会变成手中的一元钱的缘由.或者说明白了小商贩欺骗瞎婆婆,说好是两元钱,而实际只给了一元钱的事情.
36.(只要符合文章的题旨,语言通顺,就可以得分了,你就谈谈你自己的看法吧,反正我看完这个故事后又有感动,又有愤怒,感动的是乡亲的深情,真的是深深的感动了我,愤怒的是一些下人的狠毒,对待这样一个可怜的老人如此的无情,总之,你发表自己的真实感受就可以了,不过一定要扣题啊)

From yesterday, the candidates who reflect the view of this year's English is not easy. Many candidates said cloze difficult, Mongolia feeling a little test.
New Oriental gifted high school English teacher can introduce Carefree, Listening to increase the difficulty of this year, the shorter the previous hearing materials, information points to a relatively straightforward, easy to judge the candidates, but hearing this conversation material information points require candidates to think. In addition, fill in the blank portion of the hearing, the first time this year, there is a 10-digit phone number dictation title, which is training candidates usually less contact, usually 6-8 digits dictation. Candidates in the examination room tight, easy to increase the difficulty after not answer.
Greater challenge appears in cloze section. Carefree, compared with previous years, cloze article length becomes shorter, but the number is still empty need to add 18-20, depending on the context of such candidates to determine the basis decreases. Fill in the blanks in the sentences together longer, to influence the judgment of the candidates to a certain extent, I feel it is difficult to start with. In addition, the expansion of vocabulary accordingly. Gestalt part of the candidates will spend a lot of time and energy, a certain degree of influence behind the answer.
"Hua" reproduction Tim delight
English composition has been the focus of attention of candidates. Learning and thinking entrance Lvteng Fei Research Center, this year's essay topic continues the style of previous years, is still a comic strip, in which the characters are still candidates who are familiar with Hua students, which makes the students feel a slight sense of joy. Following last year to help the teacher to the hospital after a year for two foreigners directions. Lu says that candidates have to practice the contents of helping others, the candidates want to get a high score writing, the key is to rely on content-rich and coherent language.
. "You soon coming to an end" in the open part of the essay, painting is two pencils, pencil joke long been used very little other pencils, Lu teacher, English Open the calendar year college entrance essay topics are mainly two types: Implementation Dream class and contrast class, this year belongs to the latter questions. If a candidate should be able to respect the elders from the young, or young is the capital, is wealth angles old wrote, I believe it would be more to the point.

事情：①祖孙两人幸福的分享两块糖
②玛丽娅留在了西部做一名帮贫助困的志愿者,播撒更多的快乐和幸福.
感叹：生活的贫穷
羡慕：祖孙的幸福生活
骄傲：因为自己能够给贫穷的人带来幸福与快乐
两块糖：幸福与快乐
希望可以帮到您!

解题思路：不同地区自然环境不同，发展农业的优势和不足就不相同，如北方地区发展农业的最大优势是耕地面积广，但是水资源不足，我国西部偏远地区由于受地形和位置的影响，该地区发展农业存在的问题是交通闭塞、耕地不足．

我国西部偏远地区由于受地形和位置的影响，该地区发展农业存在的问题是交通闭塞、耕地不足．
故选：D．

点评：
本题考点： 农牧业的现状及发展；西北地区的开发．

考点点评： 本题考查我国西部一些偏远的农村发展农业面临的问题，在理解的基础上即可解答．

作文的寓意很广泛 你这么写不算跑题 这说明你脑瓜转的很快 能举一反三 不错 其实还有很多种写法 就看你怎么看它的意思了

设目标距离S.炮弹出口速度v；则
当炮筒仰角为A1时；t1=2*vsinA1/g ; S-D1=vcosA1*t1；
当仰角A2时； t2=2*vsinA2/g ; S+D2=VcosA2*t2;
当仰角A0时； t0=2*vsinA0/g ; S=VcosA0*t0
联立以上各式可得答案.

偏僻 荒凉 穷乡僻壤 天涯海角

She lives in a small house a bit off the map.不用定语从句也是对的.有副词作后置定语呀.
这个句子不用where引导定语从句,而应用which、that 引导,因为 house在从句中要作主语.
She lives in a small house which、that is a bit off the map.

1.几年下来,都是如此.人们不禁疑窦顿生：这小子.难道有啥捷径?
2.略
3.2句中的“如此”是指：石根总是比他们先一步到城里
3句中的“这样”是指：专捡坎坷不平地山路走,一路颠簸下来,小的就漏到了下面,大的便留在上面.

The reason why he chose to leave that remote mountainous area is that he couldn't get used to the climate environment there.

Some students think they should go to the remote area because of poverty to help those school children, but some other students think should not go; And this can is they increase knowledge;

　　四美：　　一,人物美.《边城》在刻画人物上成功得可以称为经典.我们可能忘记小说故事的很多具体细节,但老船夫和翠翠这两个人物形象是绝对不会忘记的.老船夫为人忠厚,工作恪尽职守,送人渡河从来不要别人给的小费,...

1、诺:指作者对小翠姐妹俩的承诺
2、第一空填盼书,第二空填 看书
3、第一空:用化肥袋包书 第二空: 搂着书睡 第三空:要洗干净手 第四空: 质朴
二,答: 孩子们早忘了吧?就是寄过去,也许在路上丢了,也许被人拿走了,根本到不了孩子们的手里.
三、答:此题我还真不会,看有无其他高人解答;
四 答: 联系到生活,我觉得1、一定要守承诺,自己对别人的承诺一定要兑现（只想到这一点..第二点想不到）

小题1:表面上看这笔财富是指瞎婆婆给我的“两元钱”或一元钱 ，而实际上是指乡亲们，尤其是瞎婆婆无私地帮助我，让我懂得了如何用一颗真诚的爱心去对待身边的每一个人。这才是一笔永不贬值的精神财富。      
小题2:①说明瞎婆婆年事已高，动作缓慢，同时这也是瞎婆婆对这来之不易的“两元钱”做出重大决策的表现。（意思接近即可）
②我被瞎婆婆的举动深深地感动了，深知瞎婆婆送这“两元钱”的深情厚意，所以这是不能自已的表现。
小题3:都明白了瞎婆婆说的“两元钱”为什么会变成手中的一元钱的缘由。或者明白了小商贩欺骗瞎婆婆，说好是两元钱，而实际只给了一元钱的事情。
小题4:略（只要符合文章的题旨，语言通顺，即可给分）


小题1:

点评：本题不难，人物所表现的状态易于分析理解。分析人物，动作行为是一个重要的分析点，人物的动作行为往往是人物生理心理状态的外在表现。
小题3:
试题分析：“多么奸诈的小商人，他们竟伤天害理地欺骗一个孤苦伶仃的老婆子！”此句作了很好的说明：老婆婆被骗。
点评：本题不难，文章有关键句有助于理解。理解此类问题，要从情节入手，了解与问题相关的情节，结合人物的表现，体会理解，得出答案。
小题4:
试题分析：抓住最后画龙点睛一句“懂得如何用一颗真诚的爱心去对待身边的每一个人”爱永不贬值。
点评：本题不难，最后一句提示明确。不少的文章采用卒章显义的写作，最后通过抒情议论点明文章的主旨，要学习这种写法。

（1）整瓶液化气完全燃烧释放热量：
Q _放 =mq=20kg×4.2×10 ⁷ J/kg=8.4×10 ⁸ J，
（2）由题知，Q _吸 =c _水 m _水 △t×50%=8.4×10 ⁸ J×50%=4.2×10 ⁸ J，
水的质量：m _水 =
Q 吸
c 水 △t =
4.2×1 0 8 J
4.2×1 0 3 J/kg．℃×(100℃-20℃) =1.25×10 ³ kg．
故答案为：8.4×10 ⁸ ；1.25×10 ³ ．

如果教育者能把对学生的期望和关爱,转化为外在的行为（语
　　言、表情、行动等）施加给学生,学生就能得到充分的发展.（3分.能从目标（期待）、
　　方式（行为）、结果（学生发展）三方面写出探究的结论,可得3分；答出两个方面得
　　2分；答出一个方面得1分.如有其他发现,只要合理,可酌情给分；有新意也可得满
　　分,如"教师要相信每个学生都能学好"之类.）

ilivedwithmyclassmates,learnedfromeachotherandtookpartinmanyactivitiesoftheschoolclub.AndivisitedmanyplacesofinterestinBeijing,suchastheSummerplaceandtheGreatWall,itmademethinkthatourmotherlandissogreat itastedmanyfavouritefoodofBeijingtoo,suchasPekingStuffedDuck,itissodelicious!ihavenevereatensuchdeliciousfood! AnditalsomademeknowwellabouttheculturesandthehistoryofChinese. Finally,thanksforhelpingmefrommyteachersandmyclassmates.

解题思路：海水在阳光的照射下会很快的蒸发变成水蒸气，水蒸气遇冷又会液化成小水滴，然后在重力的作用下滑落至最低处后滴入水桶中，得到淡水．

（1）阳光照射使池内海水加快蒸发，形成水蒸气；
（2）水蒸气在塑料膜上液化，形成小水滴；
（3）塑料膜下表面结成的水滴受重力的作用滑到最低处后滴入水桶中，得到淡水；
故答案为：蒸发，液化，重力．

点评：
本题考点： 蒸发及其现象；液化及液化现象；重力的方向．

考点点评： 解决此类问题要结合蒸发和液化的物态转化进行分析解答，知道重力的方向是竖直向下的．

扬花落尽子规啼,闻道龙标过五溪.我寄愁心与明月,随风直到夜郎西.

题目叫《闻王昌龄左迁龙标遥有此寄》,而“左”字表明地方的偏僻,举一个例子：在一次会议中省长坐在主席台的正中间,那么紧次于省长的市长坐在省长的右边,然后,省长的左边坐区长,而区长的左边就坐更低一级的人.由此,可以看出在“左”边的是一级一级往下降的.在这首诗中,“左”就表明龙标地处偏远地区.
以拟人的修辞手法,把月亮映的悲伤,从而表达出诗人对友人的思念.诗人将自己对朋友的怀念带到夜郎的西边.〔夜郎〕古代少数民族的名字.（我对“720楼海豚”的看法不满意,这是李白写给王昌龄的,怎么能说是男女情爱呢?）

解题思路：海水在阳光的照射下会很快的蒸发变成水蒸气，水蒸气遇冷又会液化成小水滴，然后在重力的作用下滑落至最低处后滴入水桶中，得到淡水．

（1）阳光照射使池内海水加快蒸发，形成水蒸气；
（2）水蒸气在塑料膜上液化，形成小水滴；
（3）塑料膜下表面结成的水滴受重力的作用滑到最低处后滴入水桶中，得到淡水；
故答案为：蒸发，液化．

点评：
本题考点： 影响蒸发快慢的因素；液化及液化现象．

考点点评： 解决此类问题要结合蒸发和液化的物态转化进行分析解答，知道重力的方向是竖直向下的．