41.Mary has a _______ view of our future. But nobody believes what she said.
A.portable
B.primary
C.possession
D.positive

42.Nobody knows his _______ for helping us.
A.motive
B.motion
C.mood
D.moral

43.Both sides agree to establish a _______ zone between the south and north.
A.midst
B.mild
C.mention
D.neutral

44.This is a _______ moment for our research. We should be careful.
A.critical
B.belt
C.conscience
D.copper

45.This textbook is for the _______ students, not for the beginners.
A.observation
B.transportation
C.advanced
D.transfer

46.When I read the newspaper, I always read the _______ first.
A.headlines
B.headquarters
C.heaven
D.horizon

47.They _______ our house at $10,000.
A.count
B.vanish
C.weave
D.assess

48.When he studied at college, Jack was supported by a _______.
A.treatment
 B.assistance
C.scholarship
D.protein

49.Even as _______, he made several wonderful inventions.
A.a stock
B.a representative
C.an undergraduate
D.a gulf

50.An emergency _______ is very important in case of fire.
A.exit
B.deposit
C.discharge
D.elaborate

答案:
41.D 42.A 43.D 44.A 45.C

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