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Unit 13 We' re trying to save the earth!
Section A (1a~3b)
一、根据句意，用所给单词的适当形式填空。
1. Many people are throwing (litter) into the river.
2. I think a (wood) chair is more comfortable than a metal one.
3. Several (fisherman) were saved from the storm last night.
4. She thought she was the (ugly) among the girls.
5. Freezing weather is (harm) to apple trees.
二、单项选择。
( )1. They walked home last night because they couldn't
to take a taxi.
A. leave B. buy C. afford D. allow
( )2.The number of the volunteers in our city 2,000. And
sixty percent of them teachers and students.
A. is; is B. Is; are C. Are; is D. are; are
( )3. --What will the phone ?
--The same as you said, eight hundred dollars each.
A. spend B. cost C. pay D. afford
( )4. Miss Brown, we cleaning our classroom. Can we go
home now?
A. finish B. finishing C. are finished D. have finished
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( )5. Jane Peter is warm-hearted. They're popular
with our class.
A. Both; and B. Not only; but also
C. Neither;nor D. Either; or
( )6. --Do you have any plans for this Sunday?
--I'm not sure. I go to the countryside to see my
grandmother.
A. can B. must C. may D. need
( )7. I couldn't do it your great help. Thanks a lot!
A.with B. without C. for D. to
( )8. Many of the animals are in . We should protect them.
A. danger B. surprise C. fact D. all
( )9. The box is heavy for me to carry. Please give me a hand.
A. so B. such C. enough D. too
( )10.--I think we should take action to protect the endangered
animals.
-- .
A.So I do B. Me neither
C. Me too D. So I am
三、按要求改写句子，每空一词。
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1. She has already finished her homework. (改为否定句)
She her homework .
2． He made me do homework for him.（改为被动语态）
I was made homework for him.
3．Gina's never been to the Great Wall.（完成反义疑问句）
Gina's never been to the Great Wall, ?
4．The river used to be so clean.（改为一般疑问句）
the river to be so clean?
5. The little boy bought the toy car two days ago. (改为同义句)
The little boy the toy car for two days.
四、阅读理解。
Pollution inside homes and other buildings kills more than 4 million people each year. Many people die as a result of breathing smoke or from cooking over wood-powered or coal-powered stoves.
One way to reduce the number of deaths is through cooking equipment powered by the sun. Crosby Menzies, a solar power expert in a South African company, described his latest solar cooker called the "Sol-4". "It is four square meters of mirrors, six to eight meters in length. It is quite a large cooker. "
The "Sol-4" works by reflecting (反射) light from the sun off large mirrors. The mirrors direct (把......对准) the light at a cooking pan. Then
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the light heats the pan with solar energy. Within two minutes, the pan is hot enough to cook sausages and onions. In just four minutes, water can be boiled. That is as fast as cooking with natural gas or electricity.
The cooker is also much "friendlier" than other models because people do not have to stand in the sun to use it. And people can prepare meals without having to collect firewood or spend money on coal. Such individuals would be less likely to have breathing illnesses from harmful smoke.
At present, the cooker only works when the sun is shining. But engineers are working on a way to make it work without sunlight.
Each cooker costs about $ 2,000, which is a large amount of money for most Africans. To solve that problem, Crosby Menzies has created a non-governmental organization called Solar Cookers for Africa. It plans to raise money through donations to provide poor people with solar cooking equipment.
( )1. This passage is mainly about .
A. solar cookers B. smoke pollution
C. solar power experts D. breathing illnesses
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( )2. The "Sol-4" is mainly used to .
A. shorten the time of cooking
B. reduce the cost of making cookers
C. raise money through donations to help African people
D. reduce the number of deaths caused by harmful smoke
( )3. The underlined word “individuals”most probably
means “ ”
A. cookers B. mirrors C. people D. experts
( )4. Which of the following about the "Sol-4" is TRUE?
A. It is six to eight square meters of mirrors.
B. It can work in any weather condition now.
C. It can also heat the pan by lighting firewood.
D. It is more environment-friendly than other cookers.
( )5. From the passage, we can infer that .
A. the "80l-4" will be designed in a smaller size
B. more Africans can use the solar cookers in the future
C. the "Sol-4" is the first product of the South African company
D. the African government will provide poor people with solar
cookers
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参考答案
一、1. litter 2. wooden 3. fishermen 4. ugliest 5. harmful
二、1．C点拨：本句意为“他们昨天晚上步行回家，因为他们负担不
起乘出租车的费用”。can't a[ford to do sth．“负担不起做某事”。
2．B点拨：the number of．．，作主语时，谓语动词用单数；sixty
percent or．．．“百分之六十……”，当其修饰的名词在句子中作主
语时，谓语动同用单数还是复数取决于名词，即与名词保持一
致．因为of后跟代词them．所以答案为B。
3．B点拔：spend, pay. afford等的主语都应该是表人的名词或代
词：cost的主语应该是表物的名词或代词。故选B。
4．D点拨：本句意为“布朗老师，我们已经打扫完了教室，可以
回家了吗‘？”用现在完成时。故选D。
5．B点拨：由句子They're popular with our class．可知．他们两
个都是热心肠，故排除C和D项。both．．．and连接两个主语时，
谓语动词用复数形式，排除A，故选B。
6．C点拨：由I'm not sure．可知不确定，故选意思为“可能”的
may。
7．B点拨：本句意为“没有你的帮忙，我没法做成这件事情。”介
词without意为“没有；无”．符合句意。
8．A 点拨：很多动物都濒临火绝，所以我们要保护它们。in
danger“处于危险中”。
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9．D点拨：由句中的to carry carry+判断，这里为too．．．to．，句
型。
10．C 点拨：表示赞同上述观点．可用Me too。
三、 1.hasn't finished; yet 2. to do 3. has she 4. Did;use
5. has had
四、 本文为说明文。作者向我们介绍了一种新的环保太阳能炊具--Sol
4。文章描述了Sol 4的构造、工作原理、环保情况及价位等。
1．A点拨：细读全文可知，整篇文章都在介绍一种新型的环保太
阳能炊具。故选A。
2．D 点拨：由文中句子One way lo reduce the number of deaths is
through cooking equipment powered by the sun可知．Sol-4主要用来
减少因有害烟雾而导致的死亡。故选D。
3．C点拨：由句子And people can prepare meals without having to
breathing illnesses from harmful smoke．可猜测，本词指的是
people。故选C。
4 D 点拨：由句子It is four square meters oi mirrors, six to eight
meters in length．可知A项描述错误；由句子At present． the cooker
only works when the sun ls shining．可知B项描述错误：由句子
Then the light heats the pan with solar energy.可知D项描述错误；
由句子The cooker Is also much“friendlier”than other models可知D
项描述正确。故选D。
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5．B点拨：根据最后一段中Solar Cookers for Africa组织的创办
及其作用．可以推测在未来有更多的非洲人会使用到这种太阳能炊
具。
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