【題目】Professor Tu Youyou never stops doing research on Chinese medicine, ______?

A. is she B. does she C. isn’t she D. doesn’t she

【答案】B

【解析】

試題分析:句意:屠呦呦教授從來也沒有停止對中藥的研究,是嗎?這是一個(gè)反義疑問句。在反義疑問句中,當(dāng)陳述部分是肯定的,疑問部分用否定式;反之,則用肯定式。由句中的never可知,前半部分陳述是否定意義,后面的反義問句應(yīng)該用肯定式,不能出現(xiàn)not,可排除C/D。同時(shí),屠呦呦是單數(shù)人稱,stop是實(shí)意動(dòng)詞,所以助動(dòng)詞用does,可排除A。故選B。

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