21. It is required that such insulator(绝热体) a heat resistant material.

　　A. must be made of B. should be made of

　　C. will be made of D. would be made of

　　22. you’ve got a chance, you might as well make full use of it.

　　A. Now that B. After C. In that D. As soon as

　　23. in this way, the situation doesn’t seem so disappointing.

　　A. To look at B. Looking at C. Looked at D. To be looked at

　　24. However much , it will be worth the price.

　　A. does the watch cast B. costs the watch

　　C. the watch will cost D. the watch costs

　　25. The harder they worked, .

　　A. they seemed to do less B. the less they seemed to do

　　C. less they seemed to do D. they did less

　　26. The real trouble their lack of confidence in their abilities.

　　A. lies in B. lies on C. results in D. leads to

　　27. I sometimes wish that my university .

　　A. is as large as yours

　　B. was as large as yours

　　C. be as large as yours

　　D. were as large as yours

　　28. The authorities spend a lot of money keeping the streets and parks clean.

　　A. in B. on C. up D. out

　　29. The day I shall never forget is the one I joined the army.

　　A. that… where B. when. . . in which

　　C. which. . . when D. on which. . . why

　　30. You will be given a ticket if you the speed limit.

　　A. proceed B. exceed C. succeed D. precede

　　31. Every human being, no matter what he is doing, body heat.

　　A. keeps up B. puts off C. takes in D. gives off

　　32. I’m afraid you’ve been . This bank note is a forgery(伪造物).

　　A. taken in B. taken up C. taken off D. taken over

　　33. Not only I but also Jane and Mary tired of having one examination after another.

　　A. is B. are C. am D. be

　　34. On the end of his nose was a of thick glasses.

　　A. pair B. set C. couple D. suit

　　35. You can fly to London this evening you don’t mind changing planes in Paris.

　　A. unless B. except C. so far as D. provided

　　36. The paint is still wet. !

　　A. Be not sure to touch it B. Be sure not to touch it

　　C. Be sure to not touch it D. Don’t be sure to touch it

　　37. He a sum of money every week for his old age.

　　A. sets up B. sets out C. sets against D. sets aside

　　38. I am disappointed with the new officers elected in our club, but there is no point about it

　　A. to worry B. in worrying

　　C. for us worrying D. with us to worry

　　39. “The house is very big and beautiful.”

　　“I think the rent must be as that one.”

　　A. three times more B. three times as much

　　C. as many three times D. as three times more

　　40. Who is responsible the arrangements?

　　A. for make B. to make C. to making D. for making

　　1-5 ABBBA 6-10 CBCCB

　　11-15 BDCCB 16-20 BAACD 21-25 BACDB

　　26-30 ADACB 31-35 DABAD 36-40 BDBBD