Unit 13 The water planet
一. 单项选择
1. It was reported that _____ of the people at the meeting.
A. three-fifths; were B. third-fifths; was C. three-fives; are D. three-fifth; were
2. There are 75 students in our class, with their ages _____.
A. range from 14 to 18 B. ranging between 14 and 18
C. ranged from 14 to 18 D. ranging both 14 and 18
3. The new airport _____ if they had not stopped working on it.
A. would complete B. had been completed
C. had completed D. would have been completed
4. You _____ return the book now. You can keep it till next week if you like.
A. can’t B. mustn’t C. needn’t D. may not
5. I took _____ of the fine weather today to play tennis.
A. place of B. care C. notice D. advantage of
6. The old lady is _____ to what others say.
A. stable B. available C sensible D. sensitive
7. The water in oceans also keeps the temperature of the earth steady _____heat.
A. to absorb and release B. by absorbing and releasing
C. without absorbing and releasing D. in absorbing and releasing
8. Oil has the _____ of floating on water.
A. property B. medium C. disadvantage D. capacity
9. It’s believed that _____ in bulk (散装) is not good to the goods.
A. communication B. sending C. transport D. traffic
10. My uncle is my nearest living _____.
A. relationship B. relations C. relative D. comrade
11. Nowadays people in the city enjoy a _____ of musical life.
A. variety B. range C. extent D. width
12. Childhood memories _____ before her eyes.
A. floated B. drifted C. frowned D. frosted
13. There are _____ of people in the dining hall.
A. lot B. many C. masses D. few
14. You can go _____ by the motorboat.
A. by the way B. all the way C. in the way D. in many ways
15. These wild flowers are so special I would do _____ I can to save them.
A. whatever B. wherever C. which D. whichever
二. 完形填空
Scientists know how to make sea water fresh. They know many 16 of taking out the salt. One way is to boil the salt water. 17 the water boils, the 18 rises. When the steam 19 it becomes fresh water. 20 way is to use the 21 of the sun. A tray(盘)with special glass side is used. The 22 warms the sea water. The steam 23 . When the steam cools on the 24 , it is fresh water. This water runs 25 the glass into a little gutter(槽).
Still another way is to 26 the sea water. The 27 stays on the outside of the ice. Then the scientists 28 the salt. The ice is 29 water.
Do all these ways 30 ? Yes, they do.
Then why 31 we have fresh water for people who need it?
The 32 is that some day we will. But we can’t do that yet. It costs too much 33 to make salt water fresh. It costs more than most people can 34 .
But scientists are still 35 better ways. Some day, everyone may drink fresh water that comes from the salty sea.
16.A.ideas B. ways C. steps D. thoughts
17.A.Before B. After C. As D. If
18.A.gas B. air C. steam D. salt
19.A.freezes B. disappears C. cools D. warms
20.A.The other B. Another C. One D. Other
21.A.heat B. light C. height D. shadow
22.A.glass B. sun C. sky D. tray
23.A.appears B. falls C. disappears D. rises
24.A.tray B. ground C. glass D. way
25.A.up B. from C. out of D. down
26.A.freeze B. cool C. pour D. save
27.A.water B. salt C. sun D. sea
28.A.wash off B. taste C. add D. take off
29.A.salty B. clear C. fresh D. clean
30.A.affect B. suit C. fit D. work
31.A.don’t B. needn’t C. daren’t D. mustn’t
32.A.problem B. answer C. reason D. excuse
33.A.money B. time C. difficulty D. salt
34.A.save B. cost C. pay D. take
35.A.caring for B. looking for C. waiting for D. depending on
三. 阅读理解
“I’ve changed my mind. I wanted to ha
生词表: