职称英语综合类单项选择题每日一练(2017.01.11)

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1 Many people say that they are annoyed by the U.S. News pictures.

2 All of the following factors relating to cancer risk were mentioned in the EXCEPT________.

3 56.(单项选择题)

4 48 （单项选择题）

5 52.(单项选择题)