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题型:单选题 题类:常考题 难易度:普通

人教版(新课程标准)高中英语必修一Unit 4 Earthquakes同步练习3

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
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