题目内容
【题目】According to a new survey, every year about ______ dollars is spent to look after people with illness caused by smoking.
A.30 millions of
B.30 million of
C.30 millions
D.30 million
【答案】D
【解析】句意:根据一项新的调查,每年大约三千万美元花在因吸烟患病的人们身上。名词million前有具体的数字时,不用加s,故选D。
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