摘要：Doctors are doing research to find out what happens physically when people smoking. A.quit B.decline C.depart D.reserve 解析:考查动词词义辨析.句意:医生正在做当人们戒烟后身上发生的变化的研究. decline下倾.下降.下垂,depart离开.起程,reserve储备.保存.预约.根据句意 且主语是人可知是停止吸烟. 答案:A

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