2. 外语
  3. From this passage, we learn that aspirin is usually used to treat _______. Researchers in the United States carried out the stu

From this passage, we learn that aspirin is usually used to treat _______. Researchers in the United States carried out the stu

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问题 From this passage, we learn that aspirin is usually used to treat _______.
Researchers in the United States carried out the study with the help of _______.
选项 A、young people
B、some old people
C、men doctors
D、woman doctors
答案C
解析 第四段第二句话意为：它包括22，000名健康的男性医生。故本题答案为C。
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