关于破折号自己的一想法，求鉴定

usxiao · 发表于 2010-12-23 11:54:31

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 OA is (B)

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

刚才做PREP，这道题解释很好，介绍破折号的时候有点CONFUSE。我看了一下，可不可以这么理解这个破折号，第一个破折号表示解释插入，第二个破折号完全是因为要完成句子才加的，不然that convinced 就好像修饰破折号的解释的内容。

mudiduange · 发表于 2010-12-24 00:14:21

可以这样理解呀，没有第二个破折号，that修饰的对象不清晰

关于破折号自己的一想法，求鉴定

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