1、The millions of calculations involved, had they been done by hand, _____ all practical value by the time they were finished.
A.had lost
B.would lose
C.would have lost
D.should have lost
本题答案：
C
2、_____ he has limited technical knowledge, the old worker has a lot of experience.
A.Since
B.Unless
C.As
D.Although
本题答案：
D
3、It worried her a bit _____ her hair was turning grey.
A.which
B.if
C.for
D.that
本题答案：
D
4、The _____ work continued for more than a week but there was still no sign of the missing boy.
A.research
B.rescue
C.vessel
D.vast
本题答案：
B
5、Sixty percent of the work _____?
A.have been done
B.had been done
C.has been done
D.has done
本题答案：
C
6、His parents wouldn't let him marry anyone _____ family was poor .
A.of whom
B.whom
C.of whose
D.whose
本题答案：
D
7、You _____ him so closely; you should have kept your distance.
A.shouldn't follow
B.mustn't follow
C.couldn't have been following
D.shouldn't have been following
本题答案：
D
8、____ in the United States, St.Louis has now become the 24th largest city.
A.The fourth biggest city it was
B.Once the fourth biggest city
C.Being the fourth biggest city
D.It was once the fourth biggest city
本题答案：
B
9、____ we can't get seems better than ____ we have.
A.What, what
B.What, that
C.That, that
D.That, what
本题答案：
A
10、Eye contact is important because wrong contact may create a communication ____.
A.tragedy
B.vacuum
C.question
D.barrier
本题答案：
D
11、What worried me most was ____ to go abroad alone.
A.my not allowing
B.having not allowed
C.my being not allowed
D.my not being allowed
本题答案：
D
12、I think I was at school, ____ I was staying with friends during the vacation when I heard the news.
A.or else
B.and then
C.or so
D.even so
本题答案：
A
13、There was a big hole in the road which ____ the traffic.
A.set back
B.held up
C.stood back
D.kept down
本题答案：
B
14、She wrote a letter ____ black ink.
A.at
B.in
C.with
D.by
本题答案：
B
15、The professor could hardly find sufficient grounds ____ his arguments in favour of the new theory.
A.to be based on
B.to base on
C.which to base on
D.on which to base
本题答案：
D
16、He is a man ____ we can learn very much.
A.of whom
B.that
C.of who
D.from whom
本题答案：
D
17、“What do you hear from your family?”“Oh, the news ____ pretty good.”
A.were
B.is
C.are
D.hadbeen
本题答案：
B
18、He has resigned and will ____ charge of his office today.
A.hand out
B.hand over
C.hand down
D.hand on
本题答案：
B
19、In the dark street, there wasn't a single person _____ she could turn for help.
A.that
B.who
C.from whom
D.to whom
本题答案：
D
20、Robert is good at languages, _____ we all know.
A.because
B.for
C.as
D.since
本题答案：
C
