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

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