prep 一题。。

gmatziyu · 发表于 2010-4-20 20:50:25

182.(32026-!-item-!-188;#058&006326)

The organic food industry has organized a successful grassroots campaign—using Web sites, public meetings, and also mass mailings—that have convinced the Department of Agriculture to change the proposed federal regulations for organically grown food.

A. using Web sites, public meetings, and also mass mailings—that have convinced

B. using Web sites, public meetings, and mass mailings—that has convinced

C. by using Web sites, public meetings, and mass mailings—in convincing

D. by the use of Web sites, public meetings, as well as mass mailings—that convinced

E. which used Web sites, public meetings, and mass mailings—in convincing

这题答案是B，想问为什么c不对呢？谢谢

这题答案是B，想问为什么c不对呢？谢谢

luojihencha · 发表于 2010-4-24 21:25:45

我也很想知道

weirui5621 · 发表于 2010-4-24 23:14:20

by的含义就是with the help or use of换句话说，这里后面再用一个use是在重复

open to discuss

prep 一题。。

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