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


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

using Web sites, public meetings, as well as mass mailings—that has convinced

略

略

略

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题目分析：
and表示纯粹的并列，as well as则有了强弱的区别，由于原题中三者之间几乎都没有什么关系，所以应该用表达纯粹并列的and。答案为(A)。


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