完形填空 One way of preventing floods may be by making rain! This may sound rather 1

完形填空

One way of preventing (阻止) floods may be by making rain! This may sound rather 1 . As we know, heavy rain is the 2 of floods, and in Malaysia, most of the 3 are caused by the annual monsoon (一年一度的湿季风), which brings heavy rain to the east coast. If, 4 , the rain could be made 5 in the South China Sea, there would be 6 floods since the rain could not reach the east coast.

Is it possible to make 7 give up their rain? Yes, it is.

As you probably know, clouds are caused 8 air containing water-vapor (水蒸气). The air rises and, since water-vapor 9 water when it cools, very tiny drops of water are formed. Since these drops are very 10 , they float (漂浮) in the air and 11 a cloud. When the cloud rises, however, the drops become 12 . Because of this, they 13 together and become big drops. The big drops are no longer able to float because of their 14 , and they fall. As they 15 , they pick up more drops and become bigger. This is the cause of rain.

Rain making 16 making these bigger drops form and fall 17 they would normally do so. This can be done by “seeding” the clouds with chemicals, 18 planting seeds in the ground. Rain can be produced 19 by these chemicals. The seeding is done by 20 which fly through the clouds.

1．

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A．wonderfulB．strangeC．interestingD．terrible

2．

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A．causeB．reasonC．wayD．means

3．

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A．rainsB．snowsC．windsD．floods

4．

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A．howeverB．soC．as wellD．then

5．

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A．to riseB．to raiseC．to fallD．to drop

6．

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A．no longerB．no moreC．manyD．not

7．

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A．MalaysiaB．coastC．cloudsD．floods

8．

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A．ofB．byC．withD．for

9．

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A．changesB．turnsC．becomesD．drinks

10．

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A．bigB．smallC．wetD．dry

11．

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A．formB．organizeC．meetD．bring

12．

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A．hotterB．warmerC．lighterD．colder

13．

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A．appearB．joinC．fallD．make

14．

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A．sizeB．lengthC．colorD．body

15．

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A．floatB．formC．riseD．fall

16．

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A．meansB．suggestsC．showsD．needs

17．

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A．afterB．untilC．beforeD．when

18．

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A．asB．such asC．likeD．for

19．

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A．by the wayB．as itC．like itD．in this way

20．

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A．sowing machinesB．tractorsC．farmersD．planes

试题答案

答案：B;A;D;A;C;B;C;B;C;B;A;D;B;A;D;A;C;C;D;D