2. 外语
  3. Merck’s stock plummeted 40% in six weeks because some Vioxx "victims" died. According to Legato, prescription drugs have played

Merck’s stock plummeted 40% in six weeks because some Vioxx "victims" died. According to Legato, prescription drugs have played

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问题 Merck’s stock plummeted 40% in six weeks because some Vioxx "victims" died.
According to Legato, prescription drugs have played an important role in the extension of life expectancy since ______.
选项
答案the beginning of the 20th century
解析 根据题干中的信息词Legato和life expectancy定位到第四个小标题下的最后，可知Legato表示，自20世纪初期以来，预期寿命几乎翻了一番，这绝非偶然，因为处方药起了重大的作用，由此可得答案。
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大学英语六级

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