大全－５１ 请大家帮忙看一下

qianxun

1.        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.

我选的是D

twice the number 有这种用法吗，不是double才有这种用法吗．

Ｄ错在什么地方了，我没看出来

请大家指教

Gloriaqd

"those" is not clear and can be ambiguous. Moreover, cannot use "as much as" but "as many as" to modify a countable noun.

Hamiton

你是想比吸烟的人数吧，those 只能指 young people了，可是这么多年了，总人口变了吧，所以这个两倍的意思不一定啊

原文是要比吸烟的比例，77年是10％，79年就是 20％了，number 就是指这个10％了
twice + 名词是标准的两倍表达方法

qianxun

明白了.

谢谢