【題目】Doctors are doing research to find out what happens physically when people______ smoking.

A.quit B.decline C.prevent D.reserve

【答案】A

【解析】

試題分析:考查動(dòng)詞辨析。動(dòng)詞quit放棄,戒除;decline下降;prevent阻止,預(yù)防;reserve預(yù)定,保留;句意:醫(yī)生們正在研究當(dāng)人們戒煙的時(shí)候身體上會(huì)發(fā)生什么變化。根據(jù)句意可知A正確。

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