【题目】Smoking __________ the risk of heart attacks and other health problems.
A. multipliesB. negotiates
C. opposesD. polishes
在线课程【答案】A
【解析】
考查动词词义辨析。句意：吸烟会使心脏病和其他疾病的风险加倍。A. multiplies乘以；B. negotiates协商；C. opposes反对；D. polishes擦亮。根据句子可知，吸烟增加患病的风险，故选A。