请教一道经典倍数题

gtb0335 · 发表于 2011-1-12 00:17:24

According to surveys by the National Institute on DrugAbuse, about 20 percent of young adults usedcocaine 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 1977survey
(E) twice the number reported in the 1977 survey我觉得A也对啊，可是为什么答案是E呢~
求高人指点

wuzongde · 发表于 2011-1-12 01:08:26

A错，因为those指代不清，是20 percent 还是adults
E清楚，没有歧义

v19suffered · 发表于 2011-1-12 01:11:50

我试着分析一下啊
A，those指代不明，到底是20%还是adults
B，to double好像是说还要再double一下在已经double的基础上，与作者的意图相反
C,还是those的问题
D，同C
E，the number明确的告诉了比较的对象

According to surveys by the National Institute on DrugAbuse, about 20 percent ofyoung adults usedcocaine 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 1977survey
(E) twice the number reported in the 1977 survey我觉得A也对啊，可是为什么答案是E呢~
求高人指点

-- by 会员 gtb0335 (2011/1/12 0:17:24)

gtb0335 · 发表于 2011-1-12 15:00:21

谢谢啦哈

crown48 · 发表于 2011-1-12 21:29:45

a不是和原文一样么？a要是错了，原文岂不是。。。？
（我是菜鸟）

v19suffered · 发表于 2011-1-13 03:31:44

A只是一个选项，建议先看看OG的介绍。

a不是和原文一样么？a要是错了，原文岂不是。。。？
（我是菜鸟）

-- by 会员 crown48 (2011/1/12 21:29:45)

请教一道经典倍数题

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