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10) The number of animals used in laboratory tests __________(decline) over the last 20 years.
3. 根据句子的意思选择正确的答案。
1) __________, they couldn t find a solution to the problem.
A. Hard as they tried B. Hard tried as they
C. As hard they tried D. As hard as they tried
2) Find out all you can do about the job you are applying for and the organization you hope __________.
A. working B. to work C. working in D. to work for
3) Astronomers are planning a new observatory to study the __________ exploding stars believed to be the black hole.
A. single B. individual C. respective D. lonely
4) Two thousand miles __________ over a short vacation.
A. is too far for us to travel B. are too far for us to travel
C. is too far for our traveling D. are too far for our traveling
5) The traditionalist type of composer begins with a pattern __________.
A. rather with a theme B. rather a theme
C. rather than with a theme D. rather than a theme
6) __________ that we are not living in a traditionalist period nowadays.
A. It goes without saying B. It goes not to say
C. It ll go without saying D. It is not going to say
7) The special use of leisure __________ from individual to individual.
A. alters B. differs C. ranges D. varies
8) __________, the more likely positive attitudes towards leisure as well as academic will be encouraged.
A. The more this is seriously sought B. The more seriously this is sought
C. The more seriously is sought this D. The more is this seriously sought
9) Every worker has a highly developed sense of how much work is expected __________ him.
A. off B. from C. of D. for
10) People and animals are different in their reactions to drugs and __________ their bodies work.
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