2. 外语
  3. The results of the new study are unexpected. The study lasted for about five years.

The results of the new study are unexpected. The study lasted for about five years.

admin2009-06-15  85
问题 The results of the new study are unexpected.
The study lasted for about five years.
选项 A、Right
B、Wrong
C、Not mentioned
答案A
解析 文章第一段提到大多数实验对象连续5年每天服用了各种维生素及矿物质，由此可以得出答案。故A为答案。
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