单项选择题

There are not enough facts to （） a genuine debate of animal awareness.

A. attain
B. retain
C. sustain
D. obtain

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单项选择题

Shortly after his retirement, the former president（）gardening and hunting.

A. took to
B. took on
C. took in
D. took after

单项选择题

Like many other social problems in contemporary America, the wide gap between men and women in jobs and earnings is often regarded as an （） fact of life.

A. inevitable
B. inferior
C. initiative
D. inherent

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