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According to the passage, the scientists carried o...

英语中级口译岗位资格证书考试

单选题

According to the passage, the scientists carried out their researches on ______.

发布日期：2022-06-02

A.smokers from different parts of the world

B.smokers from different states in the United States

C.actors and actresses who smoke a lot

D.wait staff and bartenders

标签： passage scientists carried researches

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