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