资源简介

Unit 2 Saving the Earth
Topic 2 All these problems are very serious.
Section A
1. blow strongly/hard 刮大风
rain/snow heavily/hard 下大雨
2. change into = turn into 把…变成
3. Trees can stop the wind from blowing the earth away.
(1) stop ... (from) doing sth. 阻止......做某事
prevent ... (from) doing sth.
keep ... from doing sth. (from不能省略)
protect ... from doing sth. (from不能省略)
(2) blow sth. away 把…吹/刮走 blow-blew-blown
wash sth. away 把…冲走，把…洗掉
拓展：blow out吹灭
put out 扑灭
4. be saved by 为被动语态结构
被动态结构：动作承受者+ be + V（过去分词）+by 动作实施者
save v. 贮存；挽救；节约
5. need v. 实意动词, need to do sth. , 否定：don’t need to do sth.
情态动词, need do sth., 否定：needn’t do sth.
need n.需要，需求
6. a number of “许多，大量”
a number of + 可数名词复数 + 谓语动词复数
the number of “......的数量”
the number of + 可数名词复数 + 谓语动词单数
eg: There are a number of cars in the parking lot. The number of the cars is about 200.
停车场停了大量的车。车的数量大约是200。
7. in danger of 处于…的危险中
die out 灭绝
come into being 产生，开始存在，诞生
巩固：die -died -died v. 死亡 death n. dying 现在分词
Unit 2 Topic 2 Section A 随堂练习
(
基础篇
)
一.根据首字母提示补全单词。
1. I often see an old couple walk on the golden s ___________hand by hand.
2. We lost the game, a________ everyone played well.
3. Do you know the r_______________ why she doesn’t come
4. The wind b_________ strongly outside. It’s very cold.
5. Youngsters should work for today and plan for the f_____________________.
二．单项选择。
1.The cleaners must keep the street _____.
A.from getting dirty B.to dirty C.to get dirty D.getting dirty
2.The Green Great Wall can stop the wind_____ blowing the earth away.
A.to B.from C.of D.with
3.This washing machine is very difficult to use. _____ can learn to use it in a very short time.
A.Somebody B.Anyone C.Nobody D.Everyone
4.—Hi, Bob! I can’t find my story book. Have you seen it
—Sorry, I haven’t. Why not ask Jim Perhaps he’s seen it _____.
anywhere B.everywhere C.nowhere D.somewhere
5. —Which of the two subjects do you like, art or music
—_____，they are really interesting.
Neither B.Both C.None D.All
(
提升篇
)
一、完形填空。
There are many kinds of pollution around us, 1 air pollution, soil pollution, noise pollution and light pollution. They are bad __2_ our health in many ways.
Burning gas, oil and coal creates air pollution. It can cause sore eyes and __3_ problems.
With the increase of pollution and the development of industry, litter is everywhere. It makes our environment dirty. People put lots of rubbish in the land. Farmers use too many _4_ in the fields. They destroy the soil. So soil pollution has become serious.
Noise pollution can make people_5_. For example, people may lose their hearing if they work in a _6 place for a long time. Too much noise can cause high blood pressure _7__.
Working for a long time in strong, changeable light _8_ cause some kinds of illnesses. It makes people feel __9__ and is especially bad for the eyes.
With __10_ pollution, our planet will become greener and our health will be better. Let’s be greener people.
1. A. such as B. for example C. as well as D. because of
2. A. to B. in C. for D. of
3. A. breath B. breathe C. breathed D. breathing
4. A. chemical B. chemicals C. chemist D. chemistry
5. A. blind B. lame C. deaf D. healthy
6. A. noise B. noisy C. quiet D. quietly
7. A. as well B. too C. also D. either
8 A. must B. need C. should D. may
9. A. comfortable B. possibly C. terrible D. terribly
10. A. little B. less C. few D. fewer
Section B
1. producer 生产者 user 使用者
2. as a result 结果是
as a result of ... 由于...
3. do something useful to do sth = take measures to do sth. 采取措施做某事
something useful adj.修饰不定代词时，放在后面，作后置定语。
somewhere warm 一些暖和的地方； nothing serious 没什么严重的
4.here and there = everywhere 到处，处处
5.worst 为bad的最高级
worst of all 最糟糕的是
6. make rules 制定规章 break/disobey rules 违反规则 follow/obey rules 遵守规则
7. lie 躺/位于 lie-lay-lain lying现在分词
Unit 2 Topic 2 Section B 随堂练习
(
基础篇
)
一.根据句意填入合适的单词.
1.Human beings shouldn’t kill 　　　 (野生的) animals.
2.If a man breaks the law,he should be p　　　 .
3.The dustmen(清洁工) haven’t collected the r　　　 yet.
4.The question is so difficult that n　　　 can answer it.
5.This accident is the 　　　 (最糟糕的) for years.
二．单项选择。
1.I usually plan to do ________ with my friends on weekends.
　A. anything interesting 　　B. interesting anything C. something interesting 　　 D. interesting something
2. This washing machine is very difficult to use.______ can learn to use it in a very short time.
A. Somebody B. Anyone C. Everyone D. Nobody
3. —Which of the two subjects do you like, art or music
—_____，they are really interesting.
A.Neither B. Both C. All D. None
4. What can we students do _____ the environment
A .to protect B. protected C. protects D. protecting
5. There are five people in the room, but I know _____.
A. both of them B. none of them C. neither of them
(
提升篇
)
三．根据句意完成句子.
1. 结果，空气污染已成为一个严重的问题
_________ _________ _________, air pollution has become a serious problem.
2. 政府为了保护环境正在采取有效的措施
The government is doing_________ _________ to protect the environment.
没有人喜欢污染。
_________ _________ _________ likes pollution.
我们不应当到处丢垃圾
We shouldn’t leave rubbish _________ _________ _________ .
5. 我们应当尽一切努力保护环境
We should do everything _________ _________ to protect the environment.
四.完形填空。
Today we can see that many people are cutting down the trees in the forests. A lot of 1 lands have become deserts. If we read newspapers, we’ll learn that the forests on the earth are getting smaller 2 . We are cutting down large numbers of trees 3 we need wood and farmland. Some scientists say that there will not be any great forests 4 20 or 30 years.
What will happen if the forests disappear A lot of plants will die and the animals will 5
their homes. In many places the new farmland will soon look 6 the old desert. Crops will not grow there. There won’t be enough 7 , and the weather will get hot and dry. If the climate of the earth changes, life will be 8 for everyone. Our living environment will become 9 . More and more rich farmland will disappear. We will suffer a lot from both droughts (干旱) and floods.
It’s our duty 10 the forests well. Everyone should try his best to make a contribution (贡献) to taking care of the forests. Stop cutting down the trees and make the world greener!
( )1.A.low B.rich C.lonely D.high
( )2.A.on time B.all the time C.in time D.no time
( )3.A.or B.so C.because D.but
( )4.A.in B.at C.on D.with
( )5.A.find B.build C.lose D.decorate
( )6.A.like B.up C.at D.out
( )7.A.snow B.sunshine C.wind D.rain
( )8.A.easy B.hard C.happy D.interesting
( )9.A.better and better B.worse and worse C.bigger and bigger D.more and more
( )10.A.to do B.do C.to protect D.protect
Section C
1. a lot of = lots of ＋ 可n./不可n. There’s a lot of work to do and a lot of people have been sent there.
2. Some things we have done are very good for the earth while others are bad.
(
并列连词，“但是，而，然而”，表示转折关系.
引导时间状语从句，“当……时候”，所引导的从句只表示时间段。
) (
while
)
3. cut down 砍下
cut过去式和过去分词均为cut；现在分词：cutting
拓展：cut off 切断（电源，水），中断 The phone line was cut off during the storm.
cut up 切碎 He cut the old tree up
cut sth. into pieces 把某物切碎
(
through prep.穿越，从……中间穿过
The two friends were
walking through
the forest
.
across prep.横跨……，横穿
The Great Green Wall is across the northwest of China.
cross v. 横穿，如
横过马路、过桥、过河等
。
Be careful when you
cross
the street
.
)4.
（1）
易混词辨析：though 尽管=although thought 想法（think的过去式）
（2）direct adj.直接的
v. 指挥，指示.
directly adv. 直接地 = direct ＋ly
拓展 director 导演 direction 方向，指导
5. It mainly comes from burning oil, coal and wood.
burning 燃烧的，现在分词做定语
(
n. 表格，形式
v. 形成，构成
)6. This has formed a blanket around the earth.
form
7. greenhouse effect 温室效应
ozone 臭氧
ozone layer 臭氧层
radiation 射线
carbon dioxcide 二氧化碳
the level of the oceans. 海平面 ＝ sea level
8. refer to 指的是……
Unit 2 Topic 2 Section C 随堂练习
(
基础篇
)
根据句意及首字母提示写出正确的单词
When the sun ___________, everything is bright.（升起）.
You should dig a big _________ in the earth first if you want to plant a tree.
She managed to from the burning car though she was badly hurt.
Playing basketball is one of the of physical exercise.
We got to the hotel_____________ [d rektli] as soon as we arrived in Beijing.
二．单项选择。
1. Remember this,__________ careful you are, ____mistakes you will make
A. the more, the fewer B. the more, the less C. the more, the few D. the little; the few
2. The weather report says the temperature will _____tomorrow.
rise B. raise C. be rise D. rising
3. I got up late this morning, _____, I missed the chance of the interview.
A. as a result B. by the way C. in the beginning D. in this way
4. --- Is there ______ in today’s newspaper
--- Yes. A new school will be built in the village.
nothing new B. anything new C. new nothing D. new anything
5. The child will go ______ the road after the light turns green.
A. through B. cross C. across D. crosses
6. His dog for two weeks.
A. died B. has been dead C. has died D. is dying
(
提升篇
)
三．根据句意完成句子.
1. 人们已经砍了太多树。
People have________ _________ too many trees.
2. 结果，很多富裕的地方变成了沙漠
__________ __________ __________, a lot of rich land has __________ __________ desert.
3. 当下雨或刮风，会水土流失。
When it rains or when the wind blows, the earth is__________ __________.
4. 我们不应该到处留下垃圾。
We shouldn't leave rubbish__________ __________ __________.
5. 每个人应关爱珍惜动物和种更多树。。
Everyone should__________ __________ wild animals and plants more trees.
阅读理解。
The world is not hungry, but it is thirsty . It seems strange that nearly 3/4 of the earth is covered with water while we say we are short of (短缺) water. Why Because about 97% of water on the earth is sea water which we can't drink or use for watering plants directly (直接地) . Man can only drink and use the 3% - the water that comes from rivers and lakes. And we can't even use all of that, because some of it has been polluted (污染) .
　　Now more water is needed. The problem is: Can we avoid (避免) a serious water shortage later on First, we should all learn how to save water. Secondly, we should find out the ways to reuse it . Scientists have always been making studies in the field. Today, in most large cities water is used only once and then runs to the sea or rivers . But it can be used again. Even if (即使) every large city reused its water, still there would not be enough. What could people turn to next
　　The sea seems to have the best answer. There is a lot of water in the sea. All that needs to be done is to get the salt out of the sea water. This is expensive, but it's already used in many parts of the world. Scientists are trying to find a cheaper way of doing it. So you see, if we can find a way out, we'll be in no danger of drying up.
1.The world is thirsty because ________.
A. 3/4 of the earth is covered with water
B. we have enough sea water to use directly
C. we haven't used all the water in rivers and lakes
D. about 97% of water on the earth can't be drunk or used for watering plants directly
2.Which of the following is true
A. 3% of water on the earth is in rivers and lakes. B. 75% of water on the earth is the sea.
C. 97% of the earth is covered with water. D. 3% of water on the earth is sea water.
3. From the passage we learn _________.
A. if every city reuses its water, we'll be in no danger of drying up
B. man can only drink and use about 25% of water on the earth
C. today in most large cities water is used only once
D. water can be used only once
4.To avoid the serious water shortage, which of the following is the most important
A. Save water and try to make good use of the water in rivers and lakes.
B. Don't pollute water and keep all rivers and lakes clean.
C. Make dirty water clean and then reuse it.
D. Try to find a cheaper way to get the salt out of the sea water.
5.The name of the passage would be ________.
A. The Sea Water 　 B. How to Save Water
C. The Thirsty World D. The Polluted Water
Section D
1. seem + adj. （系表结构）
+ to do sth
It seems that + 从句
2. ① 解决问题：solve / deal with the problem
② the shortage of 缺乏 be short of 缺乏
拓展 be short for… 是……的缩写 = for short
Eg. TV is short for television = We call television TV for short.
3. avoid 避免 v. + sth. / doing sth.
后接动名词的动词
avoid practice finish discourage enjoy imagine keep mind prevent regret spend consider(考虑)
4. ① discover 发现 探索 v. discovery 探索 发现 n.
② reuse 重复使用 v. re- 为构词法中的前缀，意为“再一次……”
类似用法：recycle(再循环) retell(重述) return (返回) reform(重整，改革)
5. This is because about 97% of the water on the earth is sea water.
主可数，谓复数 主不可数，谓单数
百分比+ of + 主语 + 谓语动词
6. 其他短语串烧
① take away from 从……带走
② in this field / area / world 在这个领域
③ day by day 一天又一天地
④ use sth. for doing sth. 用某物做某事
⑤ be covered with 被……覆盖
⑥ natural resources 自然资源
Unit 2 Topic 2 Section D 随堂练习
(
基础篇
)
一．根据音标及汉语，首字母提示完成句子.
1.Every morning I left home to ______________(避开) the rush hour.
2.Scientists around the world are working to ______________ [d sk v (r)] a cure for AIDS.
3.The boy is __________ [ n li] as tall as his father.
4. How can we avoid a serious water_____________[ :t d ]
5. Our environment has passed some l against water pollution.
二. 单项选择.
1. --- Do you know about the Columbus (哥伦布)？
--- Yes, he _______ America in 1492.
discovered B. invented C. has discovered D. has invented
2. He tried to avoid _______ my question.
A. to answer B. answer C. answering D. answers
3. The ground is _______ with snow.
A. covering B. covered C. cover D. discover
4. In the past, farmers lived a poor life and had _______food to eat.
A. plenty of B. few C. little D. much
5. Water cellars for mother (母亲水窖)aims to help the people who ____drinking water in western parts of china.
A. are short of B. be short of C. have enough D. is enough
6.The clouds are getting together. It _____rain.
A.seems B. seems to C. seems that D. seeming
(
提升篇
)
三．句型转换 .
1. We shouldn’t throw rubbish everywhere.（同义句转换）
We shouldn’t throw rubbish and .
2. Hurry up. You will miss the bus.（合为一句）
up, you will miss the bus.
3. The population of China is 1.3 billion. (对画线部分提问)
the population of China
4. I have already seen the film. (改为一般疑问句)
Have you the film
5. Did your father go to Japan （改为现在完成时）
your father to Japan
阅读下面短文 ， 根据题目要求及上下文语境填词 ，使短文正确、通顺 。每空一词 。
　　Environmental pollution is one of the most serious problems. Pollution has a bad 1. / ′Influ ns/ on our life.
　　With the 2. d of modern industry, environmental pollution is increasing quickly. More and more factories 3. (生产，制造) waste gas . The air is becoming dirtier and 4. ，and it affects so many people’s health. Air pollution can cause 5. b problems and even cancer.
　　The increase in the number of industries has caused the water problems, too. There are more and more chemical factories 6. waste water into rivers and lakes. Water pollution kills fishes and other living things.
Noise pollution is also 7. h to people’s health. It 8. (打扰) people and many people can’t sleep well at night . It can make people 9. /def/ and they may have hearing loss.
I hope the government can take 10. ( 措 施 ) to protect our environment in many ways .Unit 2 Saving the Earth
Topic 2 All these problems are very serious.
Section A
1. blow strongly/hard 刮大风
rain/snow heavily/hard 下大雨
2. change into = turn into 把…变成
3. Trees can stop the wind from blowing the earth away.
(1) stop ... (from) doing sth. 阻止......做某事
prevent ... (from) doing sth.
keep ... from doing sth. (from不能省略)
protect ... from doing sth. (from不能省略)
(2) blow sth. away 把…吹/刮走 blow-blew-blown
wash sth. away 把…冲走，把…洗掉
拓展：blow out吹灭
put out 扑灭
4. be saved by 为被动语态结构
被动态结构：动作承受者+ be + V（过去分词）+by 动作实施者
save v. 贮存；挽救；节约
5. need v. 实意动词, need to do sth. , 否定：don’t need to do sth.
情态动词, need do sth., 否定：needn’t do sth.
need n.需要，需求
6. a number of “许多，大量”
a number of + 可数名词复数 + 谓语动词复数
the number of “......的数量”
the number of + 可数名词复数 + 谓语动词单数
eg: There are a number of cars in the parking lot. The number of the cars is about 200.
停车场停了大量的车。车的数量大约是200。
7. in danger of 处于…的危险中
die out 灭绝
come into being 产生，开始存在，诞生
巩固：die -died -died v. 死亡 death n. dying 现在分词
Unit 2 Topic 2 Section A 随堂练习
一.根据首字母提示补全单词。
1. I often see an old couple walk on the golden s and hand by hand.
2. We lost the game, although everyone played well.
3. Do you know the reason why she doesn’t come
4. The wind blows strongly outside. It’s very cold.
5. Youngsters should work for today and plan for the future.
二．单项选择。
1.The cleaners must keep the street A .
A.from getting dirty B.to dirty C.to get dirty D.getting dirty
2.The Green Great Wall can stop the wind B blowing the earth away.
A.to B.from C.of D.with
3.This washing machine is very difficult to use. C can learn to use it in a very short time.
A.Somebody B.Anyone C.Nobody D.Everyone
4.—Hi, Bob! I can’t find my story book. Have you seen it
—Sorry, I haven’t. Why not ask Jim Perhaps he’s seen it D .
anywhere B.everywhere C.nowhere D.somewhere
5. —Which of the two subjects do you like, art or music
— B ，they are really interesting.
Neither B.Both C.None D.All
一、完形填空。
There are many kinds of pollution around us, 1 air pollution, soil pollution, noise pollution and light pollution. They are bad __2_ our health in many ways.
Burning gas, oil and coal creates air pollution. It can cause sore eyes and __3_ problems.
With the increase of pollution and the development of industry, litter is everywhere. It makes our environment dirty. People put lots of rubbish in the land. Farmers use too many _4_ in the fields. They destroy the soil. So soil pollution has become serious.
Noise pollution can make people_5_. For example, people may lose their hearing if they work in a _6 place for a long time. Too much noise can cause high blood pressure _7__.
Working for a long time in strong, changeable light _8_ cause some kinds of illnesses. It makes people feel __9__ and is especially bad for the eyes.
With __10_ pollution, our planet will become greener and our health will be better. Let’s be greener people.
A 1. A. such as B. for example C. as well as D. because of
C 2. A. to B. in C. for D. of
D 3. A. breath B. breathe C. breathed D. breathing
B 4. A. chemical B. chemicals C. chemist D. chemistry
C 5. A. blind B. lame 瘸的 C. deaf D. healthy
B 6. A. noise 噪音 B. noisy 吵闹的 C. quiet D. quietly
A 7. A. as well B. too C. also D. either
D 8 A. must B. need C. should D. may
C 9. A. comfortable B. possibly C. terrible D. terribly
B 10. A. little B. less C. few D. fewer
Section B
1. producer 生产者 user 使用者
2. as a result 结果是
as a result of ... 由于...
3. do something useful to do sth = take measures to do sth. 采取措施做某事
something useful ad.j修饰不定代词时，放在后面，作后置定语。
somewhere warm 一些暖和的地方； nothing serious 没什么严重的
4.. here and there = everywhere 到处，处处
5.worst 为bad的最高级
worst of all 最糟糕的是
6. make rules 制定规章 break/disobey rules 违反规则 follow/obey rules 遵守规则
7. lie 躺/位于 lie-lay-lain lying现在分词
Unit 2 Topic 2 Section B 随堂练习
一.根据句意填入合适的单词.
1.Human beings shouldn’t kill wild(野生的) animals.
2.If a man breaks the law,he should be published.
3.The dustmen(清洁工) haven’t collected the rubbish yet.
4.The question is so difficult that nobody can answer it.
5.This accident is the worst(最糟糕的) for years.
二．单项选择。
1.I usually plan to do C with my friends on weekends.
　A. anything interesting 　B. interesting anything C. something interesting 　 D. interesting something
2. This washing machine is very difficult to use. D can learn to use it in a very short time.
A. Somebody B. Anyone C. Everyone D. Nobody
3. —Which of the two subjects do you like, art or music
— B ，they are really interesting.
A.Neither B. Both C. All D. None
4. What can we students do A the environment
A .to protect B. protected C. protects D. protecting
5. There are five people in the room, but I know B .
A. both of them B. none of them C. neither of them
三．根据句意完成句子.
1. 结果，空气污染已成为一个严重的问题
As a result , air pollution has become a serious problem.
2. 政府为了保护环境正在采取有效的措施
The government is doing something useful to protect the environment.
没有人喜欢污染。
None of us likes pollution.
我们不应当到处丢垃圾
We shouldn’t leave rubbish here and there .
5. 我们应当尽一切努力保护环境
We should do everything we can to protect the environment.
四.完形填空。
Today we can see that many people are cutting down the trees in the forests. A lot of 1 lands have become deserts. If we read newspapers, we’ll learn that the forests on the earth are getting smaller 2 . We are cutting down large numbers of trees 3 we need wood and farmland. Some scientists say that there will not be any great forests 4 20 or 30 years.
What will happen if the forests disappear A lot of plants will die and the animals will 5
their homes. In many places the new farmland will soon look 6 the old desert. Crops will not grow there. There won’t be enough 7 , and the weather will get hot and dry. If the climate of the earth changes, life will be 8 for everyone. Our living environment will become 9 . More and more rich farmland will disappear. We will suffer a lot from both droughts (干旱) and floods.
It’s our duty 10 the forests well. Everyone should try his best to make a contribution (贡献) to taking care of the forests. Stop cutting down the trees and make the world greener!
( B )1.A.low B.rich C.lonely D.high
( B )2.A.on time B.all the time C.in time D.no time
( C )3.A.or B.so C.because D.but
( A )4.A.in B.at C.on D.with
( C )5.A.find B.build C.lose D.decorate
( A )6.A.like B.up C.at D.out
( D )7.A.snow B.sunshine C.wind D.rain
( B )8.A.easy B.hard C.happy D.interesting
( B )9.A.better and better B.worse and worse C.bigger and bigger D.more and more
( C )10.A.to do B.do C.to protect D.protect
Section C
1. a lot of = lots of ＋ 可n./不可n. There’s a lot of work to do and a lot of people have been sent there.
2. Some things we have done are very good for the earth while others are bad.
3. cut down 砍下
cut过去式和过去分词均为cut；现在分词：cutting
拓展：cut off 切断（电源，水），中断 The phone line was cut off during the storm.
cut up 切碎 He cut the old tree up
cut sth. into pieces 把某物切碎
4.
（1）
易混词辨析：though 尽管=although thought 想法（think的过去式）
（2）direct adj.直接的
v. 指挥，指示.
directly adv. 直接地 = direct ＋ly
拓展 director 导演 direction 方向，指导
5. It mainly comes from burning oil, coal and wood.
burning 燃烧的，现在分词做定语
6. This has formed a blanket around the earth.
form
7. greenhouse effect 温室效应
ozone 臭氧
ozone layer 臭氧层
radiation 射线
carbon dioxcide 二氧化碳
the level of the oceans. 海平面 ＝ sea level
8. refer to 指的是……
Unit 2 Topic 2 Section C 随堂练习
根据句意及首字母提示写出正确的单词
When the sun rises, everything is bright.（升起）.
You should dig a big hole in the earth first if you want to plant a tree.
She managed to escape from the burning car though she was badly hurt.
Playing basketball is one of the forms of physical exercise.
We got to the hotel directly [d rektli] as soon as we arrived in Beijing.
二．单项选择。
1. Remember this, A careful you are, ____mistakes you will make
A. the more, the fewer B. the more, the less C. the more, the few D. the little; the few
2. The weather report says the temperature will A tomorrow.
rise B. raise C. be rise D. rising
3. I got up late this morning, A , I missed the chance of the interview.
A. as a result B. by the way C. in the beginning一开始 D. in this way用这个办法
4. --- Is there B in today’s newspaper
--- Yes. A new school will be built in the village.
nothing new B. anything new C. new nothing D. new anything
5. The child will go C the road after the light turns green.
A. through B. cross C. across D. crosses
6. His dog B for two weeks.
A. died B. has been dead C. has died D. is dying
三．根据句意完成句子.
1. 人们已经砍了太多树
People have cut down too many trees.
2. 结果，很多富裕的地方变成了沙漠
As a result , a lot of rich land has changed into desert.
3. 当下雨或刮风，会水土流失。
When it rains or when the wind blows, the earth is taken away .
4. 我们不应该到处留下垃圾。
We shouldn't leave rubbish here and there .
5. 每个人应关爱珍惜动物和种更多树。。
Everyone should care for wild animals and plants more trees.
阅读理解。
The world is not hungry, but it is thirsty . It seems strange that nearly 3/4 of the earth is covered with water while we say we are short of (短缺) water. Why Because about 97% of water on the earth is sea water which we can't drink or use for watering plants directly (直接地) . Man can only drink and use the 3% - the water that comes from rivers and lakes. And we can't even use all of that, because some of it has been polluted (污染) .
　　Now more water is needed. The problem is: Can we avoid (避免) a serious water shortage later on First, we should all learn how to save water. Secondly, we should find out the ways to reuse it . Scientists have always been making studies in the field. Today, in most large cities water is used only once and then runs to the sea or rivers . But it can be used again. Even if (即使) every large city reused its water, still there would not be enough. What could people turn to next
　　The sea seems to have the best answer. There is a lot of water in the sea. All that needs to be done is to get the salt out of the sea water. This is expensive, but it's already used in many parts of the world. Scientists are trying to find a cheaper way of doing it. So you see, if we can find a way out, we'll be in no danger of drying up.
1.The world is thirsty because D .
A. 3/4 of the earth is covered with water
B. we have enough sea water to use directly
C. we haven't used all the water in rivers and lakes
D. about 97% of water on the earth can't be drunk or used for watering plants directly
2.Which of the following is true A
A. 3% of water on the earth is in rivers and lakes. B. 75% of water on the earth is the sea.
C. 97% of the earth is covered with water. D. 3% of water on the earth is sea water.
3. From the passage we learn C .
A. if every city reuses its water, we'll be in no danger of drying up
B. man can only drink and use about 25% of water on the earth
C. today in most large cities water is used only once
D. water can be used only once
4.To avoid the serious water shortage, which of the following is the most important D
A. Save water and try to make good use of the water in rivers and lakes.
B. Don't pollute water and keep all rivers and lakes clean.
C. Make dirty water clean and then reuse it.
D. Try to find a cheaper way to get the salt out of the sea water.
5.The name of the passage would be C
A. The Sea Water 　 B. How to Save Water
C. The Thirsty World D. The Polluted Water
Section D
1. seem + adj. （系表结构）
+ to do sth
It seems that + 从句
2. ① 解决问题：solve / deal with the problem
② the shortage of 缺乏 be short of 缺乏
拓展 be short for… 是……的缩写 = for short
Eg. TV is short for television = We call television TV for short.
3. avoid 避免 v. + sth. / doing sth.
后接动名词的动词
avoid practice finish discourage enjoy imagine keep mind prevent regret spend consider(考虑)
4. ① discover 发现 探索 v. discovery 探索 发现 n.
② reuse 重复使用 v. re- 为构词法中的前缀，意为“再一次……”
类似用法：recycle(再循环) retell(重述) return (返回) reform(重整，改革)
5. This is because about 97% of the water on the earth is sea water.
主可数，谓复数 主不可数，谓单数
百分比+ of + 主语 + 谓语动词
6. 其他短语串烧
① take away from 从……带走
② in this field / area / world 在这个领域
③ day by day 一天又一天地
④ use sth. for doing sth. 用某物做某事
⑤ be covered with 被……覆盖
⑥ natural resources 自然资源
Unit 2 Topic 2 Section D 随堂练习
一．根据音标及汉语，首字母提示完成句子.
1.Every morning I left home to avoid(避开) the rush hour.
2.Scientists around the world are working to discover [d sk v (r)] a cure for AIDS.
3.The boy is nearly [ n li] as tall as his father.
4. How can we avoid a serious water shortage[ :t d ]
5. Our environment has passed some laws against water pollution.
二. 单项选择.
1. --- Do you know about the Columbus (哥伦布)？
--- Yes, he A America in 1492.
discovered B. invented C. has discovered D. has invented
2. He tried to avoid C my question.
A. to answer B. answer C. answering D. answers
3. The ground is B with snow.
A. covering B. covered C. cover D. discover
4. In the past, farmers lived a poor life and had C food to eat.
A. plenty of B. few C. little D. much
5. Water cellars for mother (母亲水窖)aims to help the people who A drinking water in western parts of china.
A. are short of B. be short of C. have enough D. is enough
6.The clouds are getting together. It B rain.
A.seems B. seems to C. seems that D. seeming
三．句型转换 .
1. We shouldn’t throw rubbish everywhere.（同义句转换）
We shouldn’t throw rubbish here and there.
2. Hurry up. You will miss the bus.（合为一句）
Hurry up, or you will miss the bus.
3. The population of China is 1.3 billion. (对画线部分提问)
What is the population of China
4. I have already seen the film. (改为一般疑问句)
Have you ever seen the film
5. Did your father go to Japan （改为现在完成时）
Has your father gone to Japan
阅读下面短文 ， 根据题目要求及上下文语境填词 ，使短文正确、通顺 。每空一词 。
　　Environmental pollution is one of the most serious problems. Pollution has a bad 1. influence / ′Influ ns/ on our life.
　　With the development 2. of modern industry, environmental pollution is increasing quickly. More and more factories 3. produce (生产，制造) waste gas . The air is becoming dirtier and 4. dirtier ，and it affects so many people’s health. Air pollution can cause breathing 5. _ problems and even cancer.
　　The increase in the number of industries has caused the water problems, too. There are more and more chemical factories 6. pouring waste water into rivers and lakes. Water pollution kills fishes and other living things.
Noise pollution is also harmful 7. to people’s health. It 8. disturbs (打扰) people and many people can’t sleep well at night . It can make people 9. deaf /def/ and they may have hearing loss.
I hope the government can take 10. measures( 措 施 ) to protect our environment in many ways .

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