Doctors see a connection between increased amounts of leisure time spent ______ and the increased number of cases of skin cancer.
A. to sunbathe
B. to have sunbathed
C. having sunbathed
D. sunbathing
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我国2001年的GDP约为1978年的( )。
A. 32.5倍
B. 26.5倍
C. 22.5倍
D. 18.5倍
What does the example of India illustrate
A. Wealthy people tend to have fewer children than poor people.
B. Natural selection hardly works among the rich and the poor.
C. The middle class population is 80% smaller than that of tribes.
D. India is one of the countries with a very high birth rate.
When the committee ______ to details, the proposed plan seemed impractical.
A. got down
B. set about
C. went off
D. came up
2004年上半年，农村人均非生活消费现金支出比2003年多多少元( )
A. 219元
B. 163元
C. 123元
D. 40元
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