两道语法题，大家一起讨论讨论吧

mudiduange

1、One of Ronald Reagan’s first acts as President was to rescind President Carter’s directive that any chemical banned on medical grounds in the United States be prohibited from sale to other countries
.
(A) that any chemical banned on medical grounds in the United States
be prohibited from sale to other countries
(B) that any chemical be prohibited from sale to other countries that was banned on medical grounds in the United States

(C) prohibiting the sale to other countries of any chemical banned on medical grounds in the United States

(D) prohibiting that any chemical banned on medical grounds in the United States
is sold to other countries（C）
(E) that any chemical banned in the United States
on medical grounds is prohibited from being sold to other countries
Key: C

个人看法：
1、directive that引导应该是同位语从句，而用be错误，因此ABE均不对；

D选项，prohibiting that 后面跟的是一个宾语从句，这种用法问题在哪儿呢？


2、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(B)

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

疑问：CD by using …为何不对？

mudiduange

看看我的问题呢，各位

mudiduange

版主在不，帮忙回答下吧