OG11黄皮书-100题：我都说不清属于什么问题了，混乱郁闷。请教：）

100. Bihar is India's poorest state, with an annual per capita income of $111, lower than in the most impoverished countries of the world.

(A)  lower than in

(B)   lower than that of

(C)  and lower than that of

(D)  which is lower than in

(E)   which is lower than it is in

答案B。我相信大家肯定觉得挺简单的。我本来第一反应也是选A，但是后来我又觉得E好一些，因为如果不用which。我总觉得会有歧义阿。比方句子意思可能变成Bihar is lower than。不知道怎么搞得，我就会这么想，简直走火入魔了。郁闷，大家帮我分析一下吧。多谢多谢。

D,E可以直接排除。原因如下。

with an annual per capita income of $111 为插入语，用WHICH的话，那么WHICH修饰STATE， 就是说STATE IS LOWER THAN……,显然不对。