求助： 大全SectionB-1 P434

大全的题号比较乱，一时没搜到这道，贴出来求助，希望NN帮忙！

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（D）

(E) that is, that screens out a percentage of minorities or women disproportionate with

第2个that指代mechanisms，用复数。请问第一that is 的that是什么成分呢？整个句子的结构看不太清楚，为什么有两个谓语is/are了啊。。。

that is是一个常用的插入语，看题的时候可以直接遮去不看.

which means不是这么用的.

that have 和 that screen是并列的两个定语从句，两个都是限定性定从中间不用and来连接。