题目内容
4．Put an ice cube from your fridge into a glass of water．You have a piece of string（线） 10centimeters long．The problem is to take out that piece of ice with the help of the string．But you must not touch the ice with your fingers．You may ask your friends to try to do that when you are having dinner together．There is a saltcellar on the table．You must use salt when you carry out this experiment．
First you put the string across the piece of ice．Then put some salt on the ice．Salt makes ice melt（融化）．The ice round the string will begin to melt．But when it melts，it will lose heat．The cold ice cube will make the salt water freeze（结冰） again．
After a minute or two you may raise the piece of string and with it you will raise your piece of ice!
This experiment can be very useful to you．If，for example，there is ice near the door of your house，you must use very much salt to melt all the ice．If you don't put enough salt，the water will freeze again．
58．We must useD when we carry out this experiment．
A．a fridge
B．some food
C．a table
D．some salt
59．How long will it take to carry out this experiment？C
A．More than three minutes．
B．Five minutes or two．
C．Only one minute or two．
D．About ten minutes．
60．We can learn something aboutC from the passage．
A．physics
B．biology
C．chemistry
D．maths．
分析 本文介绍了一个小实验，作者基本上是按照事情的发展顺序进行介绍，阅读中注意序数词的使用．
解答 58-60 DCC
58．D细节理解题．根据第二段You must use salt when you carry out this experiment．可知你必须用盐当你进行这个实验，故选D．
59．C细节理解题．根据After a minute or two you may raise the piece of string and with it you will raise your piece of ice!可知一两分钟后你可以用一根绳子举起一块冰！故选C．
60．C细节理解题．冰融化成水或者水结成冰属于化学变化，故从本文中学到的是化学知识．选C．
点评 做题时要在理解好文意的基础上，与题目有机的结合，从文章中找到相关细节性的句子与选项细细比对，进行选择或推理判断，选出符合文章内容的正确选项．做题注意灵活，有时可采用排除法或直选法确定出最终答案．
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It's the end of class．When the bell rings，students of Luohu Foreign Languages School in Shenzhen quickly take out their cell phones．They want to log on*to their micro blogs to check the interesting things that have happened in the last hour．
19．环境问题已经成为人们最关注的问题之一，低碳生活亦已成为人类共同关注的话题．你校学生会打算以保护环境为主题搞一次社会实践活动，假如你是学生会主席，请根据以下提示写一份倡议书，号召全体师生都来关注环境问题，在保护环境、减少污染、节约能源等方面做出努力：
要求：（1）表达清楚，语法正确，上下文连贯；
（2）必须包括所有相关信息，并作适当发挥；
（3）100词左右（开头和结尾已给出，不计入总词数）；
（4）不得使用真实姓名、校名和地名．
Dear teachers and classmates：
Pollution is going more and more serious．The factories dump wastes everywhere，people throw rubbish everywhere，and people cut down the trees and destory the forest．
As a result，the rivers are polluted，so is the air．（高分句型）．Recently，someone infected with bird flu virus．
As we all known （高分句型），we have only one earth，low-carbon lifestyle can not only more comfortable to humanlity but also safer to the environment．（高分句型）I hope we can do something to focus on environmental issues．
When we go shopping we can use shopping basket instead of plastic bags，and we must save water and electricity in the daily life．We can reuse our textbook，and we also can write letters to TV station and the newspaper office
．
Students'Union．
| 现象 | 工厂倾倒废弃物； |
| 人们乱扔垃圾； | |
| 人们过度砍伐树木、森林； | |
| … | |
| 后果 | 河流、空气等都被污染了； |
| 最近有人感染禽流感（bird flu）等病毒； | |
| … | |
| 行动 | 人们购物时用购物篮而不用塑料袋（plastic bag），生活中节约水电； |
| 我们可以再利用（reuse）课本； | |
| 我们还可以写信给电视台或报社… |
（2）必须包括所有相关信息，并作适当发挥；
（3）100词左右（开头和结尾已给出，不计入总词数）；
（4）不得使用真实姓名、校名和地名．
Dear teachers and classmates：
Pollution is going more and more serious．The factories dump wastes everywhere，people throw rubbish everywhere，and people cut down the trees and destory the forest．
As a result，the rivers are polluted，so is the air．（高分句型）．Recently，someone infected with bird flu virus．
As we all known （高分句型），we have only one earth，low-carbon lifestyle can not only more comfortable to humanlity but also safer to the environment．（高分句型）I hope we can do something to focus on environmental issues．
When we go shopping we can use shopping basket instead of plastic bags，and we must save water and electricity in the daily life．We can reuse our textbook，and we also can write letters to TV station and the newspaper office
．
Students'Union．