遇到GWD的一道题，请大家指点一下

sophia921112

According to a 1996 survey by the National Associationof College and UniversityBusiness Officers, more than three times as many independent institutions of higher educationcharge tuition and fees of under $8,000 a year than those that chargeover $16,000.

A.   than those that charge

B.   than are charging

C.   than to charge

D.   as charge

E.    as those charging

正确答案是？为什么？

sophia921112

up，求大家帮忙解释下~

road2USA

D
three times as institutions charge tuition and fees of under $8,000 a year as (those) charge over $16,000.

as many...as...比较题，比较的是动作，省略those。

http://www.beatthegmat.com/comparision-question-need-expert-s-reply-t79937.html 帮你搜了一下国外instructor的回答给你参考一下~

kiwifoodtown

LS错误，这题选E as those charging，比较的是机构数量。