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41.This is an _______ that will not be easily forgotten.

A.impact

B.academic

C.insult

D.alternative

42.Please _______ me for my rudeness. I really do not know the custom here.

A. engage

B.comfort

C.execute

D.forgive

43.Water and air are _______ to human beings. We can not live without them.

A.harbour

B.function

C.definite

D.essential

44.When the airplane takes off, the passengers are told to _______ their seat belts.

A.fountain

B.fix

C.tight

D.fasten

45.This is not what we asked you to do. You can not get more pay for the _______ work.

A.owing

B.device

C.tired

D.extra

46.My throat is _______. I cannot speak any more.

A.sore

B.purchase

C.glow

D.faint

47.Many years ago, a lot of factories were _______ from big cities to the mountainous areas in case of war.

A.transferred

B.transformed

C.transmitted

D.transported

48.He said in his letter that he would _______ some photographs but I couldn’t find anything in the envelope.

A.case

B.double

C.enclose

D.nonsense

49.Many English words are _______ from Latin.

A.displayed

B.spread

C.lost

D.derived

50.I feel _______ to say that I can not believe what he said.

A.wanted

B.observed

C.obliged

D.wandered

答案:

41.C 42.D 43.D 44.D 45.D

46.A 47.A 48.C 49.D 50.D