二、完形填空(共20小题;每小题重分，满分为20分)

(A)

Water is very important  16  living things. Without water there can be  17  life on earth. All animals and plants need water. Man needs water, too. We need water to drink, to cook our food and to clean  18  . Water  19  almost everywhere. Even in the  20  part of the world there is some water in the air. You can not see it  21  feel it when it is part of the air. The water  22  seas, rivers is a liquid(液体). The water in the air is not a liquid  23  a gas(气体). Clouds are made of water. They may  24  made of very small drops(滴)of water. Water, you have  25  , is very useful, so we must save water.

16. A. to           B. of              C. with           D. by

17. A. not          B. any             C. none           D. no

18. A. our          B. ourselves        C. ourself         D. ours

19. A. can find      B. finds            C. is found        D. are found

20. A. dry          B. drier            C. driest          D. most dry

21. A. nor          B. and             C. or             D. then

22. A. in           B. on              C. of             D. to

23. A. but          B. and             C. then            D. also

24. A. am          B. is               C. be             D. are

25. A. found        B. found out        C. looked for       D. found