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标题: 请问大全SECTION 2 21 [打印本页]

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作者: 欧阳可情    时间: 2004-1-4 11:20
标题: 请问大全SECTION 2 21
According to surveys by the National Institute on Drug Abuse, about 20 percent of young adults used cocaine in 1979, doubling those reported in the 1977 survey.
(A) doubling those reported in the 1977 survey
(B) to double the number the 1977 survey reported
(C) twice those the 1977 survey reported
(D) twice as much as those reported in the 1977 survey
(E) twice the number reported in the 1977 survey

   此题目答案是E，而我选了D，请问E中的前后比较对象对等吗？谢谢，搜索到了相关连接，但是进去一看问的并不是这道题目。

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作者: mindfree    时间: 2004-1-4 11:27
"those" is wrong. The only noun in plural form is "young adults". So in D you are comparing young adults with young adults. However, this question is not about absolute[\b] number, but the comparative number --percentage. In E, the number and 20% are comparable.

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作者: 欧阳可情    时间: 2004-1-4 11:37
明白了。多谢啊，我光想着twice the nunber 是什么结构了

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作者: dreadpower    时间: 2004-1-4 22:29

以下是引用mindfree在2004-1-4 11:27:00的发言：
However, this question is not about absolute[\b] number, but the comparative number --percentage. In E, the number and 20% are comparable.

   分析的太精辟了！！

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