大全51

kyoko

大全51.    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

答案是E, 为啥不是D

braveMBA

AS MUCH AS修饰不可数名词。

kyoko

哎呀,我怎么给忘了.多谢勇敢的MBA

ballpark

why not a?

叮当

以下是引用ballpark在2003-11-3 4:30:00的发言：
why not a?

a 中 those 指什么呢?　young adults? 可是前面说的是percent.