【題目】Yuan Longping has devoted all his life _______ the research and the _______ of the rice plants.

A. on, development B. to, development

C. to, developing D. on, developing

【答案】B

【解析】

試題分析：句意：袁隆平一生致力于水稻的發(fā)展研究。此題考查固定短語devote to致力于做某事和the development of……的發(fā)展。根據(jù)句意，應(yīng)選B。

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