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Module 5 课时跟踪检测（二） Introduction & Reading — Language Points
Ⅰ.根据提示写出单词的正确形式
1．At first, our company was very small, but after purchasing some smaller ones, it soon expanded (扩大) into a large one.
2．Workers reacted (反应) angrily to the latest news of more job losses at the factory.
3．Her conclusion (结论) was that the situation would never become better.
4．He lives in an ordinary (普通的) house in the small town.
5．Owing to lack of enough markets, investment and manpower, the company had to contract (收缩) its business.
6．It was only a partial (part) solution to the problem.
7．They looked at him with a mixture (mix) of horror and envy.
8．It was concluded that he didn’t tell us the truth. I came to the conclusion that he lied.(conclude)
9．Our office is equipped with a lot of advanced equipment.(equip)
10．I wanted to know how the students reacted to my words and your reaction.(react)
Ⅱ.选词填空
add ... to ...；put ... in order；keep ... out of；react with；think of；aim at
1．He lifted his gun and aimed_at the bird in the tree.
2．You should keep the dog out_of our baby’s room.
3．I love it because I look at it everyday and think_of everyone in it!
4．Add some wood to the stove. This will keep the fire going.
5．Iron reacts_with water and air to produce rust.
6．Don’t throw your clothes about. Put them in_order.
Ⅲ.完成句子
1．最近的雨天增加了我们的困难。
The recent rainy weather added_to_our_difficulties.
2．著名科学家下周将给我们做如何预测地震的报告，这是真的吗？
Is_it_true_that the famous scientist will give us a lecture on how to predict earthquakes next week
3．这个区域的五分之二的土地被树和草覆盖着。
Two fifths_of_the_land in the district is_covered_with trees and grass.
4．最后，我要感谢你们为我做的一切。
In_conclusion,_I’d like to thank you for all you’ve done for me.
5．妈妈总是批评他把东西放得乱七八糟，但令她满意的是，今天他把它们摆放得很整齐。
His mother was always scolding him for leaving things out_of_order,_but to her satisfaction, he put_them_in_order today.
Ⅳ.阅读理解
A
The food we eat seems to have a great effect on our health. Although science has made big steps in making food more fit to eat, it has, at the same time, made many foods unfit to eat. Some research has shown that perhaps eighty percent of human illness is related to food and forty percent of cancer is related to food as well. That food is related to illness is not a new discovery. In 1945, some researchers realized that things commonly used to keep colors in meats and other food additives (添加剂) caused cancer.
Yet, these additives remain in our food, and it is difficult to know which things on the wrappings (包装) of foods are helpful or harmful. The additives which we eat are not all so direct. Farmers often give penicillin (青霉素) to their animals, and because of this, penicillin has been found in the milk of cows. Sometimes similar things are supplied to animals not for their health, but just to make a profit.
The farmers are simply trying to fatten the animals in order to get a higher price on the market. Although some countries have tried to control such things, the practice continues.
语篇解读：本文是一篇说明文。文章讲述了食物可以让我们生存，但是现在的很多疾病也是与食物有关的，告诉我们要特别注意自己所吃的食物。
1．According to this passage, we can know ________.
A．perhaps most kinds of cancer are related to what people eat
B．perhaps most of human illness is caused by what we eat
C．cancer was discovered in 1945
D．science has made food unfit to eat
解析：选B 细节理解题。根据第一段“Some research has shown that perhaps eighty percent of human illness is related to food and forty percent of cancer is related to food as well.”说明百分之八十的疾病都是由我们吃的食物引起的。故B项正确。
2．Things that are used to keep colors in meats are ________.
A．harmful B．useless
C．helpless D．dangerous
解析：选A 细节理解题。根据第一段“In 1945, some researchers realized that things commonly used to keep colors in meats and other food additives (添加剂) caused cancer.”说明这些让肉着色的添加剂会导致癌症。那么对人体是有害的，故A正确。
3．People use additives to ________.
A．make food more unfit to eat
B．cause cancer
C．change the color of the food
D．take off the diseases of the food
解析：选C 常识判断题。根据常识可知人们使用添加剂，主要是改变食品的颜色，所以选C。
4．Which of the following is NOT true
A．Some wrappings of food are harmful.
B．Farmers try to make more money on the market by fattening their animals.
C．“The practice continues” means “Things are still going on like that”.
D．We needn’t take care of what we eat.
解析：选D 细节理解题。根据第一段“The food we eat seems to have a great effect on our health. Although science has made big steps in making food more fit to eat, it has, at the same time, made many foods unfit to eat. Some research has shown that perhaps eighty percent of human illness is related to food and forty percent of cancer is related to food as well.”说明食物可以让我们生存，但是现在的很多疾病也是与食物有关的。说明对于我们的食物我们要特别注意。故D项正确。
B
Are you interested in doing scientific experiments If you are, follow the following instructions and do an experiment in your home.
NAME: Candle time and room temperature
MATERIALS: 15 medium size wax candles, air conditioning, a space heater, a nail or a fork, and three thermometers
INSTRUCTIONS：
1．Come up with your hypothesis (假设) — do you think that candles will burn faster in warm or cold environments
2．Measure your candles. They should all be brand new, so all of them should have the same length.
3．Run the air conditioner in one room, space heater in another, and leave another room at a mild temperature. Leave a thermometer in each room and wait for the temperature to adjust (one hour or so)．
4．Write down the temperature in each room.
5．Place 5 candles in each of the rooms and light them. Return every 15 minutes to measure all of the candles. Keep a separate data sheet for each room, and track the time, temperature, and length of all 5 candles in each.
6．When all 15 candles have burned out, plot your results on a graph with time on the x axis (horizontal) and average length in each room on the y axis. At the end, you should have a graph with three lines on it, all sloping down. Do they slope down at different rates Are the results the same as your hypothesis
TIP: These science projects for kids can also be done without air conditioning or a heater: simply place one candle in the refrigerator (preferably without anything else in it, since the smoke will make for an unpleasant taste), and one under a 40 watt bulb. Make sure to place thermometers next to the candles.
语篇解读：文章指导我们如何做实验。
5．In the experiment, what is the use of the thermometers
A．To measure candles.
B．To measure temperature.
C．To record the results.
D．To help fix the wax candles.
解析：选B 推理判断题。根据INSTRUCTIONS中第三点的“Leave a thermometer in each room and wait for the temperature to adjust”可推断thermometers是用来测量温度的，所以选B。
6．What is the purpose of doing this experiment
A．To find out how to make better use of candles.
B．To find out if candles burn faster in warm or cold environments.
C．To teach people how to do scientific experiments at home.
D．To find out why candles burn differently in different environments.
解析：选B 推理判断题。根据INSTRUCTIONS中第一点“Come up with your hypothesis (假设) — do you think that candles will burn faster in warm or cold environments？”可推断这个实验的目的是来观察蜡烛在冷的环境里还是在热的环境里燃烧得更快，所以选B。
7．The lines on the y axis are drawn to ________.
A．show the temperature in each room
B．track the time that was used to burn the candles
C．show the average length of the candles in detail in each room
D．describe your hypothesis about the time needed to burn the candles
解析：选C 细节理解题。根据INSTRUCTIONS中第六点的“average length in each room on the y axis”可知y axis是用来显示每个房间里的蜡烛每隔一个时间段后长度的平均值，所以选C。
8．After reading this passage, we can know all the following EXCEPT________.
A．where thermometers are placed in such an experiment
B．why air conditioning is required in such an experiment
C．how such an experiment is carried on without a heater in the room
D．a candle burns much faster in a warm environment
解析：选D 细节理解题。作者并没有给出最后的结果，故我们不知道蜡烛是否在热的环境里燃烧得更快，所以选D。
Ⅴ.阅读七选五
How to Make Friends
Friendship is a very important human relationship and everyone needs good friends. Good friendship has many benefits. It offers companionship, improves self worth and promotes good health. There are times in our lives such as when we have recently moved into a new town, or changed our jobs or schools. Such changes often leave us without a friend. __1__ But for many of us the process is difficult and requires courage. Below are some helpful suggestions on how to make and keep friends.
Associate with others.
The first step to making friends is associating with other people. You can go to public places to meet new people. Besides, you will need to make yourself known by becoming an active member of such places.
Start a conversation.
Starting a conversation is the second most important step in making new friends. __2__ You can always start the conversation. Being able to make small talk is a very useful skill in relating with other people.
__3__
Choosing friends with common interests is important in building friendship as these interests would always bring you and your friend together. Hanging out will always be a pleasant experience.
Let it grow.
It is a good thing to stay in touch. However, try not to press your new friend with calls, messages or visits as this would likely wear him or her out and finally you may lose your friend. __4__ The best friendships are the ones that grow naturally.
Enjoy your friendship.
The best way to enjoy your friendship is to allow your friends to be themselves. __5__Try not to change them from who they are to what you want them to be. Become the kind of friend you will want your friend to be to you.
A．Be cheerful.
B．Do things together.
C．Do not wait to be spoken to.
D．Try not to find fault with your friends.
E．Making new friends comes easy for some people.
F．For a friendship to develop you need to stay in touch.
G．So you will need to give your friend time to react to you.
语篇解读：本文提供了5个步骤，教你如何交朋友。
1．选E 后面一句“But for many of us the process is difficult and requires courage.”句意：但对很多人来说这个过程很困难，需要勇气。可知前面说对某些人来说交朋友很简单， 与E选项内容“Making new friends comes easy for some people.”相对应，故选E。
2．选C 后面一句“You can always start the conversation.”句意：你可以开始一段谈话。可知前面说不要总等着人家说话，与C选项内容“Do not wait to be spoken to.”相对应，故选C。
3．选B 这一段的大意就是要和朋友有共同的兴趣爱好，一起逛街，与B选项内容“Do things together.”相对应，故选B。
4．选G 这一段指要让友谊自然发展。根据上一句“However, try not to press your new friend with calls, messages or visits as this would likely wear him or her out and finally you may lose your friend.”句意：不要老是打电话发短信给朋友。可知也要让朋友联系你，而不是一味地你去联系他或她，与G选项内容“So you will need to give your friend time to react to you.”相对应，故选G。
5．选D 这一段指的是不要抹杀朋友的天性，后一句说“Try not to ...”可知前面也是同样的结构，与D 选项内容“Try not to find fault with your friends.”相对应，故选D。
Ⅵ.课时书面表达训练(请根据汉语提示把语段补充完整)
I 1.thought_of (想到) an experiment done by my teacher the other day. Here are the steps of the experiments. First, put a piece of copper 2.at_the_bottom (在底部) of the tube. Then, 3.add_some_mixture_of_water_and_salt_to (在……中加些盐和水的混合物) the tube. Leave it for two days, to 4.find_out (发现) if oxide can be produced. Last, put other metals into the mixture and 5.put the reaction of the metals in_order (把……按顺序排列). After experiment, they 6.came_to_a_conclusion (得出结论) that copper doesn’t 7.react_with (与……反应) salt.PAGE
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Module 5 课时跟踪检测（三） Other Parts of the Module
Ⅰ.根据提示写出单词的正确形式
1．In fact I’m rather astonished (吃惊的) that you haven’t done as what I told you to.
2．The girl kept her balance (平衡) with a long stick in her hands.
3．He was glad to be made head of the English Department (系)．
4．The professor’s lecture (演讲) made us all sleepy.
5．His research formed (形成) the basis of his new book.
6．In order to increase our output, we need to import more production facilities (facility)．
7．We can know that the news is astonishing from his astonished look. (astonish)
8．A balanced (balance) diet is very important for our health.
9．As a result of pollution, there are many dead fish floating (float) on the river.
10．School life has a great influence on the formation (form) of a child’s character.
Ⅱ.选词填空
go ahead； in the area of； lose one's balance； used to； either ... or； be astonished at
1．I used_to stay up late, but I don’t do it any more.
2．The girl lost_her_balance and fell off the balance beam.
3．The news astonished us so much that all of us were_astonished_at it.
4．—I have driven for so long, and now I want to have a rest.
—Go_ahead. It’s my turn to drive.
5．I’m going to buy either a camera or a CD player with the money.
6．In the last few years, we have made great progress in_the_area_of telecommunication.
Ⅲ.完成句子
1．不是你就是他要为我打扫房子。
Either_you_or_he_is_going_to clean the room for me.
2．你必须权衡住在大城市的利与弊。
You have to balance the advantages of living in a big city against the disadvantages.
3．这儿过去曾有一座古庙。
There_used_to_be an old temple here.
4．令我惊讶的是，车不见了。
To_my_astonishment,_the car was gone.
5．我很自豪地说我们做出了正确的决定。
I_am_proud_to_say that we made the right decision.
Ⅳ.完形填空
There are many kinds of friends. Some are always __1__ you, but don’t understand you. Some say only a few words to you, but understand you. Many people will step in your life, but only __2__ friends leave footprints.
I shall always recall the autumn and the girl with the __3__. She will always bring back the friendship between us. I know she will always be my best friend.
It was the golden season. I could see the yellow leaves __4__ on the cool __5__. In such a season, I liked walking alone in the leaves, __6__ the sound of them.
Autumn is a __7__ season but life is uninteresting to me. The free days always get me __8__. But one day, the sound of a violin __9__ into my ears like a stream flowing in the mountains. I was so surprised that I jumped to see what it was. A young girl, standing in the wind, was __10__ in playing her violin.
I had __11__ seen her before. The music was so nice that I listened quietly. Lost in the music, I didn’t know that I had been __12__ there for so long but my existence did not seem to disturb her.
Leaves were still falling. Every day she played the violin in the corner of the building __13__ I went downstairs to watch her performance. I was the only listener. The autumn seemed no longer lonely and life became __14__. __15__ we didn’t know each other, I thought we were already good friends. I believe she also loved me.
Autumn was nearly over. One day, when I was listening carefully, the sound suddenly __16__. To my astonishment, the girl came over to me.
“You must like violin.” she said.
“Yes. And you play very well. Why did you stop？” I asked.
Suddenly, a __17__ expression appeared on her face and I could feel something unusual.
“I came here to see my grandmother, but now I must leave. I once played very badly. It was your listening every day that __18__ me.” she said.
“In fact, it was your playing __19__ gave me a meaningful autumn，” I answered, “Let’s be friends.”
The girl smiled, and so did I.
I never heard her play again in my life. I no longer went downstairs to listen like before. Only thick leaves were left behind. But I will always remember the fine figure (身影) of the girl. She is like a __20__ — so short, so bright, like a shooting star giving off so much light that it makes the autumn beautiful.
语篇解读：本文是一篇故事类短文。文章通过“我”和一个小姑娘秋天邂逅的故事体现了知心朋友的重要性。
1．A.with B．for
C．against D．to
解析：选A 结合后面一句可知，“许多人与你在一起(with you), 却不能理解你”。with“在一起”；for“为了”；against“依靠着”；behind“后面”，故选A。
2．A.good B．true
C．new D．old
解析：选B 句意：只有真正的朋友，才能留在心中。good“好的”；true“真正的”；new“新的”；old“老的”，故选B。
3．A.sound B．song
C．play D．violin
解析：选D 结合后面的内容可知，“我”每天去听小姑娘拉小提琴。sound“声音”；song“歌”；play“玩耍”；violin“小提琴”，故选D。
4．A.shaking B．hanging
C．falling D．floating
解析：选D 句意：金黄的树叶在秋风中随风飘动。shake“摇摆”；hang“悬挂”；fall“落下”；float“飘动”，故选D。
5．A.wind B．snow
C．air D．rain
解析：选A 叶子是在风中飘动。wind“风”；snow“雪”；air“空气”；rain“雨”，故选A。
6．A.watching B．listening to
C．seeing D．hearing
解析：选B 句意：听树叶的声音。现在分词用作伴随状语。watch“看”；listen to“听”；see“看”；hear“听”。故选B。
7．A.lively B．lovely
C．harvest D．lonely
解析：选C 句意：秋天本是收获的季节。但是此处“我”却独自一人漫步在落叶之上，与下文的生活的无趣相对应。harvest season“丰收的季节”。lively“活泼地”；lovely“可爱的”；lonely“孤独的”，选C。
8．A.up B．off
C．down D．over
解析：选C 句意：这些自由的日子经常让我觉得很疲倦。get sb. down 意为“使某人泄气； 使某人疲倦”。get up“起床”；get off“下车”；get over“克服”，故选C。
9．A.flowed B．grew
C．entered D．ran
解析：选A 句意：琴声像山涧溪流一样，流进我的耳畔。flow“流”；grow“长”；enter“参加”；run“跑”，故选A。
10．A.lost B．active
C．busy D．interested
解析：选A 此处指小姑娘正在聚精会神地拉小提琴。be lost in (doing) sth.“沉醉于……之中”。active“积极的”；busy“忙的”；interested“感兴趣的”，故选A。
11．A.once B．never
C．often D．usually
解析：选B 结合上下文可知，“我”以前与小姑娘素不相识。once“曾经”；never“从不”；often“经常”；usually“通常”，故选B。
12．A.waiting B．stopping
C．standing D．hearing
解析：选C 句意：我沉浸在优美的琴声中，不自觉地在风中伫立。wait“等”；stop“停止”；stand“站着”；hear“听”，故选C。
13．A.because B．so
C．when D．but
解析：选C 从下文可知，“我”并不是听到琴声才下楼，而是因为两人心有灵犀，每次几乎是在小姑娘拉琴的同时，“我”也到了楼下。因此这里应用when。because“因为”；so“所以”；when“当……时”；but“但是”，故选C。
14．A.interesting B．moving
C．encouraging D．exciting
解析：选A 与上文的“生活无趣”相对，琴声让“我”觉得“生活有趣”。interesting“有趣的”；moving“感人的”；encouraging“鼓励的”；exciting“激动的”，故选A。
15．A.But B．However
C．Even D．Though
解析：选D 从整个句意来看，这里是一个让步状语从句。though表“尽管”，合乎文意。but“但是”；however“但是”；even“甚至”，故选D。
16．A.stopped B．began
C．gone D．changed
解析：选A 与平日不同，琴声突然停止，小姑娘朝“我”走来，让“我”惊讶。stop“停止”；begin“开始”；go“走”；change“改变”，故选A。
17．A.happy B．sad
C．strange D．surprised
解析：选B 由下文可知，小姑娘即将离开，故脸上闪现出悲伤的神色。happy“开心的”；sad“悲伤的”；strange“奇怪的”；surprised“惊讶的”，故选B。
18．A.surprised B．excited
C．encouraged D．interested
解析：选C 在小姑娘眼中，“我”每天来听琴对她是一种无声的激励。surprise“使惊奇”；excite“使……兴奋”；encourage“激励”；interest“使……感兴趣”，故选C。
19．A.that B．which
C．it D．who
解析：选A 此处是一个强调句型“It is ... that ...”，故选A。
20．A.song B．dream
C．fire D．sister
解析：选B 结合全文的意思可知，在“我”看来，小姑娘就像一个梦，让“我”久久难忘。song“歌”；dream“梦”；fire“火”；sister“妹妹”，故选B。
Ⅴ.阅读理解
A
In a cold winter, a couple had to move out of their big house because of bankruptcy (破产). The husband worked day and night but with no care of his wife. So she thought, “He doesn’t love me any more; he just thinks about his work.”
One day, she wanted to take a shower, but her husband stopped her at the door.“Let me take it first，OK？” “Why not let me take it first？” she asked. “I’m tired, dear. You take it later, OK？” She was very sad.
On a rainy day, she found nothing to do and turned on his computer. After a few minutes, her eyes were full of tears ...it was his diary: Today, I was quite sad. She asked me why I was always taking the shower first, and I said I was tired. She was unhappy. I wasn’t as rich as before! We moved to the small house and it was very cold. I found that if one person took the shower first, the bathroom could get a little warmer. So I always rushed to the bathroom first. When she took the shower, the bathroom could get warmer, at least 1℃. I can’t give her more, but at least I can give her 1℃ love.
语篇解读：一个寒冷的冬天，因丈夫破产，一对夫妇被迫搬离大房子。丈夫整日忙于工作，妻子以为丈夫不再爱她。当妻子看到丈夫的日记后，感动得泪流满面。
1．The woman thought her husband didn’t love her because ________.
A．he didn’t buy her beautiful clothes
B．he didn’t have enough money
C．he always worked with no care of her
D．he had another woman
解析：选C 细节理解题。第一段第二句话“The husband worked day and night but with no care of his wife.”可知。
2．The woman’s eyes were full of tears because ________.
A．she felt sad by her husband’s words
B．the rainy day made her sad
C．her eyes were hurt by the computer
D．she was moved by her husband’s diary
解析：选D 推理判断题。根据最后一段的陈述：丈夫怕妻子洗澡冷，就借口自己累，先洗澡，为了让妻子洗澡时室内温度高点。可知妻子是被丈夫感动得流泪了。
3．The man wanted to take the shower first because ________.
A．he was tired and wanted to sleep earlier
B．he wanted to make the bathroom warmer
C．he wasn’t as strong as before
D．he couldn’t stand the cold winter
解析：选B 细节理解题。根据最后一段的“So I always rushed to the bathroom first. When she took the shower, the bathroom could get warmer, at least 1℃.”可知答案。
4．From the reading, we know that ________.
A．the man loved his wife very much
B．the woman didn’t love her husband any more
C．the man was very poor before
D．the woman had no job
解析：选A 推理判断题。根据丈夫的日记内容，尤其是最后一句“I can’t give her more, but at least I can give her 1℃ love.”可知，丈夫非常爱自己的妻子。
B
There was once a professor of medicine, who was very strict with the students. Whenever he took the chair on the exam committee (担任考试委员会主席), the students would be in fear, because he was seldom pleased with the answers they gave. A student would be lucky enough if he or she could receive a good mark from him. At the end of the term, the students of medicine would take their exam again. Now a student entered the exam room and got seated before the committee. This student was a little nervous as he knew it would not be so easy to get through the exam at all. The professor began to ask. The student was required to describe a certain illness, his description of which turned out to be OK.
Then the professor asked about the cure (药剂) for illness, and the student, too, answered just as right.
“Good，” said the professor, “and how much will you give the patient？”
“A full spoon，” answered the student.
“Now you may go out and wait for what you can get, ” said the professor. At the same time, the committee discussed carefully the answers the student had given. Suddenly the student noticed that there was something wrong with his last answer.“A full spoon is too much，” he thought to himself. Anxiously he opened the door of the room and cried, “Mr. Professor, I’ve made a mistake! A full spoon is too much for a patient. He can take only five drops.”
“I’m sorry, sir.” said the professor coldly, “But it’s too late. Your patient has died.”
语篇解读：一名医学院的教授因严厉而著称，在他面前学生们都会紧张害怕，因为他们做出的回答很少会令教授满意。然而在一次考试中一名学生对问题的回答出乎意料的得到了教授的认可，但是正当他沾沾自喜时，他最后一个问题的回答却使他与及格失之交臂。
5．The students were afraid of the professor because________.
A．they often angered and disappointed him
B．their answers often astonished him
C．their answers seldom satisfied him
D．he often misunderstood them and gave them bad marks
解析：选C 细节理解题。根据文章第一段“because he was seldom pleased with the answers they gave”可知这个老师对学生要求很严格，对他们的答案总是很挑剔。故选C。
6．The student’s description of the illness was ________.
A．not correct
B．not satisfied
C．completely discouraging
D．accepted
解析：选D 细节理解题。根据文章第一段“The professor began to ask.The student was required to describe a certain illness, his description of which turned out to be OK.”可知这个学生的对于疾病的描述是正确的，可以接受的。故选D。
7．Before he left the room the student was almost sure that ________.
A．he had passed the exam, and the only thing was to wait for the mark
B．his last answer was satisfying
C．he had made a mistake
D．he had not done well in the exam
解析：选A 推理判断题。根据倒数第二段“At the same time, the committee discussed carefully the answers the student had given. Suddenly the student noticed that there was something wrong with his last answer. ‘A full spoon is too much，’ he thought to himself.”可知之前他认为自己一切的答案都还可以，只要等待结果。故选A。
8．Which of the following is NOT true
A．The patient will be in danger if he’s taken as much as a full spoon.
B．The doctor will be in trouble if he’s given the patient a full spoon.
C．Since one spoon is less than five drops, the patient will be all right soon if he takes only one full spoon at a time.
D．If the patient wants to remain safe, he should take no more than five drops at a time.
解析：选C 细节理解题。由倒数第二段最后两句“A full spoon is too much for a patient. He can take only five drops.”可知一勺多于五滴。故选C。PAGE
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Module 5 课时跟踪检测（一） Introduction & Reading — Pre?reading
阅读理解
A
Chemical Change and Physical Change
There are two kinds of changes — chemical change and physical change.
In a chemical change, there is always a new substance formed. Breaking up water into hydrogen and oxygen is a chemical change. In each of the chemical change at least one new substance is formed. A change is not a chemical change if it doesn’t form a new substance.
Physical changes are very common, too. There are many examples. You can make a physical change by tearing a piece of paper into two, or by cutting a piece of iron with lathe (机床). Here paper is still paper, and the iron is still iron.
Another way of making physical change is dissolving something in water. When you dissolve salt in water, the salt disappears. You may think that a new substance has been formed. But really there is no new substance. The salt is still salt. You can still taste it. So the dissolving of anything is a physical change.
When water freezes, the change is also a physical one. The water changes from liquid to solid, but it is still the same substance. That is why the freezing of anything is a physical change.
语篇解读：本文主要讲了两种变化——化学变化和物理变化。
1．The dissolving of salt in water is ________.
A．a physical change B．a chemical change
C．hydrogen and oxygen D．breaking up
解析：选A 细节理解题。根据文章第四段，尤其是最后一句可知：溶解任何东西都是物理变化。
2．The change of the three states of water is ________.
A．a chemical change B．different substances
C．a physical change D．the same state
解析：选C 细节理解题。从文章最后一段得知水从液体变为固体或变为气体，并没有生成一种新的物质，仍是同一种物质，因此水的三种形态变化属于物理变化。
3．We can separate a chemical change from a physical one by ________.
A．the change of shape B．the change of color
C．newly produced smoke D．newly formed substances
解析：选D 推理判断题。由第二段可知在化学变化中有新物质产生，只要没有新物质产生就不是化学变化。由此得知：判断是化学变化还是物理变化的依据是看是否有新物质产生。
4．If you change water into hydrogen, it is ________.
A．a physical change
B．a chemical change
C．a physical and chemical change
D．not a change
解析：选B 细节理解题。根据第二段可知：把水分解成氢气和氧气，是一个化学变化。
B
There are many interesting science experiments out there for young kids. You can wow your friends and teachers with them. All you have to do is to put a little effort into it and you should have no problem coming up with an interesting science experiment. One such experiment is to show your friends and teachers that you can make mothballs (樟脑丸) dance!
If you want to do it, first, be sure that you have got all the necessary science kits for your science experiment.
What you need for this experiment is a glass filled half full with water. Add a little bit of vinegar (醋) to your glass of water, about 1/3 or 1/4 of a cup (60 ml), and one teaspoon (10 ml) of baking soda, and then carefully stir the mixture. Drop a few mothballs into the glass and have your audience watch. As long as the surfaces of the mothballs become fairly rough, they should begin to bounce up and down in the glass.
You can also do a similar experiment with raisins (葡萄干) and clear pop, such as Sprite. In this experiment, all you have to do is to fill a glass with Sprite and drop a few raisins into it. The raisins should begin to bounce up and down in the glass of Sprite. You can also replace the raisins with mothballs and you should get the same effect in the Sprite. This project works because the irregular surfaces of the mothballs and the raisins hold some CO2 bubbles (气泡), causing them to bounce up and down in a dancing motion.
语篇解读：文章向我们介绍了如何做简单且有趣的科学实验。
5．The writer wrote this passage to ________.
A．explain why some science experiments are easy
B．encourage people to spend more time on science
C．tell us how good he is at doing science experiments
D．teach kids how to do an easy and interesting science experiment
解析：选D 作者意图题。通读全文，可知作者主要向我们介绍怎么做一个简单而有趣的科学实验，故选D。
6．What is the most probable name of the experiment
A．Producing mothballs. B．Dancing mothballs.
C．Changing mothballs. D．Swimming mothballs.
解析：选B 推理判断题。根据第一段的“One such experiment is to show your friends and teachers that you can make mothballs (樟脑丸) dance！”可知选“跳舞的樟脑丸”最好。
7．Which of the following things are needed in the experiment
a．baking soda b．water c．mothballs
d．salt e．vinegar f．sugar
A．bcef B．acde
C．abcd D．abce
解析：选D 细节理解题。根据第三段的“a glass filled half full with water. Add a little bit of vinegar (醋) to your glass of water, about 1/3 or 1/4 of a cup (60 ml), and one teaspoon (10 ml) of baking soda”可知应选D。
8．The underlined word “pop” in Paragraph 4 probably refers to “ ________”．
A．a mothball B．a kind of vinegar
C．a drink with bubbles D．a special kind of raisin
解析：选C 词义猜测题。根据画线词后“such as Sprite”以及“hold some CO2 bubbles”可知pop在这里是指含有二氧化碳的饮料。
C
Monthly Talks at London Canal Museum
Our monthly talks start at 19：30 on the first Thursday of each month except August. Admission is at normal charges and you don’t need to book. They end around 21：00.
November 7th
The Canal Pioneers, by Chris Lewis. James Brindley is recognized as one of the leading early canal engineers. He was also a major player in training others in the art of canal planning and building. Chris Lewis will explain how Brindley made such a positive contribution to the education of that group of early “civil engineers”.
December 5th
Ice for the Metropolis, by Malcolm Tucker. Well before the arrival of freezers, there was a demand for ice for food preservation and catering, Malcolm will explain the history of importing natural ice and the technology of building ice wells, and how London’s ice trade grew.
February 6th
An Update on the Cotsword Canals, by Liz Payne. The Smoudwater Canal is moving towards reopening. The Thames and Severn Canal will take a little longer. We will have a report on the present state of play.
March 6th
Eyots and Aits Thames Islands, by Miranda Vickers. The Thames had many islands. Miranda has undertaken a review of all of them. She will tell us about those of greatest interest.
Online bookings：www.canalmuseum.org.uk/book
More into：www.canalmuseum.org.uk/whatson
London Canal Museum
12－13 New Wharf Road, London NI 9RT
www.canalmuseum.org.uk www.canalmuseum.mobi
Tel: 020 77 130 836
语篇解读：文章主要介绍了在伦敦运河博物馆每个月的讲座安排。内容包括讲座的时间、做讲座的人以及讲座内容的简介。
9．When is the talk on James Brindley
A．February 6th. B．March 6th.
C．November 7th. D．December 5th.
解析：选C 细节理解题。根据文章第二段第二句“James Brindley is recognized as one of the leading early canal engineers.”可知所对应的日期是November 7th，故选C。
10．What is the topic of the talk in February
A．The Canal Pioneers.
B．Ice for the Metropolis.
C．Eyots and Aits Thames Islands.
D．An Update on the Cotsword Canals.
解析：选D 细节理解题。根据文章第四段中的“An Update on the Cotsword Canals, by Liz Payne. The Smoudwater Canal is moving towards reopening.”可以得出答案，故选D。
11．Who will give the talk on the islands in the Thames
A．Miranda Vickers. B．Malcolm Tucker.
C．Chris Lewis. D．Liz Payne.
解析：选A 细节理解题。根据文章第五段第一句“Eyots and Aits Thames Islands, by Miranda Vickers.”可知做报告的人是Miranda Vickers，故选A。
