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A great deal of advanced science and technology has been since China carried out

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A great deal of advanced science and technology has been since China carried out

A great deal ofadvanced science and technology has been ______ since China carried out thereform and opening policy.

A. broughtdown    B. brought in    C. broughtout    D. brought up

 

试题答案

【答案】

B

【解析】 略