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41.Students with _ _ _ _ _ _ _ problems may apply for student loans.

A. economic B.financial C.male D.economical

42.Both sugar and salt can _ _ _ _ _ _ in water.

A. desert B.absorb C.dissolve D.involve

43.I have not heard anything from him since his _ _ _ _ _ _ _ .

A. departure B.fault C.foundation D.acciptance

44.Without a proper education, people could _ _ _ _ _ _ _ all kinds of crimes.

A. conduct B.stoop C.commit D.sweat

45.Several loudspeakers are _ _ _ _ _ _ _ from the ceiling and we can hear the speaker very clearly.

A. connected B.sustained C.associated D.suspended

46.This morning in the class, our teacher lost his _ _ _ _ _ _ _ at last because he could not stand any more.

A. temper B.terror C.verse D.contain

47.It is not --- _ _ _ _ _ _ _ for me to return all the books to the library now because I still need some of them for my research.

A. continuous B.difficult C.convenient D.sufficient

48.When traveling alone in the mountains, you’d better take a _ _ _ _ _ _ _ with you in case you get lost.

A. compass B.compress C.complse D.campus

49.As a teacher, you should not _ _ _ _ _ _ _ the students from asking questions in class.

A. ruin B.restrain C.import D.impose

50.If you have any problems during your study here, please do not _ _ _ _ _ _ _ to call me for help

A. hesitate B.despair C.urge D.request