2011英语专业四级考试：考前模拟练习单选部分（二）6
51. In the meantime, the question facing business is whether such research is _____ the costs.A. worth
B. worth of
C. worthy
D. worthwhile
52. In the preface _____ the book, the old scholar attaches great importance to practicalness.
A. to
B. for
C. about
D. of
53. In this experiment, they are wakened several times during the night, and asked to report what they _____.
A. had just been dreaming
B. have just been dreaming
C. are just dreaming
D. had just dreamt
54. In this factory the machines are not regulated ______ but are jointly controlled by a central computer system.
A. independently
B. individually
C. irrespectively
D. irregularly
55. It _____ five years since the famous singer left her hometown.
A. was
B. is
C. has passed
D. had been
2011英语专业四级考试：考前模拟练习单选部分（二）6
</p> 56. It is difficult to tell whether a man is angry or not by _____ looking at his face.A. right
B. barely
C. just
D. hardly
57. It is pretty obvious that more than one person has _____ this affair.
A. laid a hand on
B. had a hand in
C. got the upper hand of
D. got into the hands of
58. It is reported that _____ adopted children want to know who their natural parents are.
A. the most
B. most of
C. most
D. the most of
59. It is strictly _____ that access to confidential documents is denied to all but a few.
A. secured
B. forbidden
C. regulated
D. determined
60. It makes me sick to think of his highly _____ manners.
A. artistic
B. artful
C. artless
D. artificial
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