为什么不用which means?

hedgeforfun

1.    Not all employment selection mechanisms that have a “disparate effect,” that is, that screens out a percentage of minorities or women disproportionate to their presence in the relevant labor market, are unlawful.
(A) that is, that screens out a percentage of minorities or women disproportionate to
(B) which means, that screens out a percentage of minorities or women disproportionate with
(C) which means, that screen out a percentage of minorities or women disproportionate with
(D) that is, that screen out a percentage of minorities or women disproportionate to
(E) that is, that screens out a percentage of minorities or women disproportionate with
为什么不用which means?
说说为什么选d?

gemj

http://forum.chasedream.com/dispbbs.asp?BoardID=23&replyID=114768&id=16821&star=1&skin=0

kathy72

that is 是插入语, that screen .....定语从句修饰mechanisms , 如果换成 which means, that...变成means 的宾语从句了, 而且, 就算是宾语从句, 中间也不应加逗号呀.

hedgeforfun

謝謝啦!gemj兄,可以可以再說說independently of 和independent from的區別?
我還是搞不清

miejue

比较一下 independently of united states 和 independent from England 的区别就很好办啦

说的都是同样的事情