1.It was there, the police believe, _____ she was able to activate the recorder she kept in her bag.
A. until
B. which
C. that
D. when
2.It is not yet known _____ computers will one day have vision as good as human vision.
A. whether
B. if
C. that
D. how
3.Such attitudes amount to a belief _____ leisure can and should be put to good use.
A. which
B. if
C. whether
D. that
4. Many of us visited the industrial exhibition, , to our disappointment, we saw very few high-tech (高技术) products.
A. where
B. which
C. as
D. that
5. On the other hand concern is also growing about the possibility of a new economic order _____ resource-rich nations of the Third World would combine to set high commodity prices.
A. which
B. what
C. that
D. in that
6.Studies have shown _____ teenagers often suffer from depression.
A. that
B. which C .in which
D. in that
7. It is becoming increasingly clear to policy-makers schools cannot solve all the problems of the larger community.
A. that
B. what
C. when
D. who
9. There is no doubt _____ a large number of people have benefited from heart surgery.
A. what
B. of
C. if
D. that
10. Such people _____ you describe are nowadays.
A. as
B. that
C. who
D. which
11. Was it in that school _____ he developed his interest in physics？
A. which
B. from which
C. where
D. that
12. Why do you blame him for his poor judgment on the matter _____ he really needs is encouragement？
A. when that
B. since that
C. when what
D. now that
13. _____, I couldn't get a job in this company.
A. Try as I might
B. As I might try
C. Try though I might
D. I might try
14. It is a well-known fact ____ a person will move in a circle when he cannot use his eyes to control his direction.
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