2. 外语
  3. A. overuse face masks B. deal with the mask problem seriously C. rub their faces and noses in the subway D. protest against the

A. overuse face masks B. deal with the mask problem seriously C. rub their faces and noses in the subway D. protest against the

admin2013-11-20  30
问题 A. overuse face masks
B. deal with the mask problem seriously
C. rub their faces and noses in the subway
D. protest against the mask guidelines
E. help protect people from being attacked by a flu
F. announce the results of their mask research
The scientists are trying to find out if masks may or may not______.
选项
答案E
解析 第一段和第七段都谈到科学家正在进行有关口罩能否保护个人免受流感感染的研究。很明显，E是正确答案。
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