240. It is an important problem. You should before you draw a conclusion.A. think about

问题补充：

240. It is an important problem. You should before you draw a conclusion.

A. think about

B. think it over

C. think of it

D. think over it

答案：

A. think about

(答案→)B. think it over

C. think of it

D. think over it

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