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Unit 13 We're trying to save the earth！
Section A
同步练习
◆根据提示完成单词
1. Smoking is h________ to our health.
2. The girl is u________，but her sister is beautiful.
3. My father likes wearing his ________ (木制的) shoes.
4. We should bring ________ (塑料) bags for shopping.
5. He had the ________ (长处) of a good education.
6. I can't ________ (买得起) to buy the car, because I don't have enough money.
7. We should collect the ________ (可重复使用的) materials in our life.
8. I don't like to use public ________ (交通运输), because it's not convenient for me.
9. Now the air has become badly ________ (污染)，we have to keep it clean.
10. I have taken part in an ________ (环境的) project since last year.
◆用所给单词的适当形式填空
1. I saw two ________ (fisherman) selling fishes in the market.
2. Throwing ________ (litter) away isn't allowed.
3. He has many ________ (advantage)．We like to get on well with him.
4. The best ________ (method) to protect the environment is to avoid kinds of pollution.
5. The price of these oranges is ________ (low) than that of those apples.
6. Everyone is ________ (try) to improve the environment at present.
7. he teacher often tells us saving the earth ________ (begin) with small things.
8. We always save electricity by ________ (turn) off the light when we leave the room.
9. Our head teacher told us we had to make a plan before ________ (take) action.
10. We should obey the school rules and________ (be) strict with ourselves.
◆单项选择
()1.He would like to ________the next Cleanup Day.
A. play with
B. play to
C. play against
D. play a part in
()2.We will help to ________ the city.
A. clean out
B.clean up
C. clean on
D. cleaned out
()3.I watched TV________ doing my homework last Sunday.
A. instead
B. instead of
C. but
D. and
()4.This blue shirt ________ him 20 dollars.
A. cost
B. spend
C. take
D.pay
()5.We should stop ________ trees at will (随意)．
A. cutting off
B. cutting down
C. cutting down on
D. cutting up
()6.Not only ________ dance well, but he sings very well.
A. he does
B. does he
C. does
D. he
()7.I think simple things like bike ________ can help to keep healthy.
A. ride
B. riding
C. to ride
D. rode
()8.His work really ________ in the factory.
A. makes a different
B. makes difference
C. makes different
D. makes a difference
()9.The number of the students in our school ________ in the last few years.
A. has fallen
B. had fallen
C. fell
D. has fell
()10.He can ________ dance, because his leg was badly hurt.
A. no more
B. no longer
C. not more
D. not longer
()11.—Have you had your breakfast yet?
—No.Mom ________ it for me now.
A. was cooking
B. is cooking
C. cooks
D. cooked
()12.Miss Lin ________ a lot of work for the poor area since 2010.
A. does
B. did
C. has done
D. will do
()13.In recent years, the economy of our country ________ rapidly.
A. is increasing
B. have increased
C. increased
D. has increased
()14.There used ________ a small river in front of my house.The water in it was clean.
