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英语六级
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单选题

A.Twenty.
B.Twenty-four.
C.Twenty-six.
D.Twenty-eight.

参考答案C
解析: How many countries' data have been analyzed in the study?
推断题。根据文中提到的The study by the University of Oxford and the London School of Hygiene &Tropical Medicine analysed data from 24 EU countries,the US and Canada(牛津大学和伦敦学校的卫生和热带药物研究了来自24个欧洲国家和美国、加拿大的数据),可知总共应为24个欧洲国家加上美国和加拿大即26个。因此,正确答案为C。

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