A study ______ that women find it more difficult to give up smoking than men.
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A
directs
B
indicates
C
influences
D
guides
推荐题目
________ I know, light travels not only in a straight line.
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A
So far
B
So many
C
So far as
D
As many as
Go back home now, Mary. Your parents ______ your safety.
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A
are concerned about
B
are concerned with
C
are concerned on
D
concern of