Unit 13 We're trying to save the earth Section A (3a-4c)预习自学+随堂检测（含答案）

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Unit 13 We’re trying to save the earth .
Period II Section A (3a-4c)
预习自学
基础单词。
鲨鱼_______________ 2. 鳍_______________ 3. 残酷的；残忍的__________
4 有害的____________ 5. 链子；链条________ 6. 工业；行业_______________
法律；法规____________ 8. 承担得起；买得起_________
9 可重复使用得； 可再次使用得_________ 10. 运输也； 交通运输__________
核心短语。
参加_______________
听说_________________
关掉__________________
一碗鱼翅汤_________________
支付__________________
add up ________________
cut off __________________
throw back into ______________
take actions ______________________
be in danger ____________________
选词填空。
have fallen , save , have shown , not only ....but also , no longer
This is _________cruel , _______ harmful to the environment .
Without a fin , a shark can ___________ swim and slowly dies .
The numbers of some kinds of sharks _________ by over 90 percent in the last 20 to 30 years.
We should help ___________ the sharks .
So far , no scientific studies __________that shark fins are good for health .
随堂检测
根据句意及首字母提示填空。
He introduced us to a new m_______ of work .
It’s h_______ to smoke so much .
We should obey the l_______ .
I can’t a_______ the car . It’s too expensive .
When you leave classroom , please _______(关掉）the lights .
用方框中所给单词或短语的适当形式填空。
so , although , if , but , when
Many people don’t realize they are killing a whole shark _______ they enjoy a bowl of shark fin soup .
Sharks are at the top of the food chain , _____if their numbers drop , the ocean’s ecosystem will be in danger.
Many think that sharks are too strong to be endangered , ________ they are wrong .
________ there are no scientific studies to support this , a lot of people believe that shark fins are good for health .
Sharks may disappear one day ________ we don’t do something to stop the sale of shark fins .
用括号内所给词的适当形式填空
A: ______ you ever _______(take ) part in an environmental project
B:Yes, I have . I ______(help) with a Clean-Up Day last year . It was _______(consider ) the biggest clean-up project this city ______ever ______(have)
A: How many people ________(take) part
B: I think more than 1,000 people ________(come ) to help out .
A: That’s fantastic ! I guess everyone in this city is _______(try) to improve the environment.
B: Yes, we can’t afford to ________(wait) any longer to take actions !
参考答案
预习自学
I 1.shark 2. fin 3. cruel 4. harmful 5. chain 6. industry 7. law 8. afford 9. reusable 10. transportation
take part in 2. hear of /about 3. turn off 4. a bowl of shark fin soup 5. pay for 6. 总计；累计 7 切掉；剪断 8 扔回 9 采取行动 10 处于危险中
III 1 not only ; but also 2. no longer 3. have fallen 4. save 5. have shown
随堂检测
1. method 2. harmful 3. law 4. afford 5. turn off
1. when 2. so 3. but 4. Although 5. if
1. Have ; taken ; helped ; considered ; has ; had ; took ; came ; trying ; wait
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