单项选择题

The real difference between plants and animals （）what they do，and not in what they seem to be.

A.lies in
B.lies with
C.lies down
D.lies up

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单项选择题

Women have yet to（）full equality with men in the workplace.

A.obtain
B.acquire
C.achieve
D.request

单项选择题

Their thoughts seem to be （）the more sober kind.

A.in
B.to
C.with
D.of