19.Yuan Longping takes up the research on farming for decades and this is ____ he devotes all his life to.(  )
A.whichB.howC.whereD.what

分析 袁隆平從事農(nóng)業(yè)研究有數(shù)十年,這是他把自己的一生都奉獻(xiàn)于此了.

解答 答案:D
分析句子結(jié)構(gòu)可知,"____ he devotes all his life to"用在了系動詞is之后,故本句是表語從句.根據(jù)句意可知,該從句缺少賓語補(bǔ)足語,故此處應(yīng)選連接代詞,意為:他把自己的一生都奉獻(xiàn)給了農(nóng)業(yè)研究;A.which 哪一個,用在此處不合句意; D.what 可以代指人或事物;故選D

點(diǎn)評 本題考查了連接代詞what在表語從句中的用法.做本題時,首先通過分析句子結(jié)構(gòu),確定該句為表語從句;其次根據(jù)句意判斷出從句缺少了賓語補(bǔ)足語,故選符合句意的what;另外,在本題中,還應(yīng)注意總結(jié)連接代詞what與which的區(qū)別.

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