请教一道关于twice用法的题目

xyc19901015 · 发表于 2011-3-16 23:25:38

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
正确选项E。。。这里的twice是如何修饰number的？

powers · 发表于 2011-3-17 00:02:06

D把those改成that就对了吗?

E是固定搭配

xyc19901015 · 发表于 2011-3-17 13:18:32

但是cocaine不是复数啊，those怎么能指代cocaine呢？所以我还是不懂。。。

powers · 发表于 2011-3-17 13:46:10

这里是比较20 percent

lxcyun · 发表于 2011-6-9 02:02:32

twice是副词，number 是名词
奇怪：副词怎么能形容名词呢？？
期盼高手解答！！

请教一道关于twice用法的题目

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