求助大神require for和require by 的区别

BJshz508

最近做magoosh做到头晕脑胀不说错误率还极高，有一道题实在是搞不懂了。题目如下：

In the United States, a jury consists either of six citizens, in a civil case, or the twelve required by a criminal case.

A either of six citizens, in a civil case, or the twelve required by
B either of six citizens, in a civil case, or of the twelve required by
C either of six citizens, in a civil case, or the twelve required for
D of either six citizens, in a civil case, or of the twelve required for
E of either six citizens, in a civil case, or the twelve required for

错选了B 正确答案是E

还望大神总结一下require的用法

BJshz508

错了，正选是E我错选了B

BJshz508

就是不太明白为什么这里是required for 而不是 required by

BJshz508

有没有大神在啊

BJshz508

求大神解答

BJshz508

自顶

BJshz508

自顶

AlanHeeee

required by a criminal case
by这个介词表达一种被动的感觉，一个“刑事案件”不是要求12个陪审团的主体
for则表达了“12个陪审团是被要求的（被谁省略了）对于一个刑事案件来说”

所以for 在表达上更精确

AlanHeeee

另外这个确定是原题吗？我觉得D更对称