OG 11 100 需要解释

guangsi

    

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    (correct)

    

  C    
and lower than that of

    

  D    
which is lower than in

      E    
which is lower than it is in      

为什么不是E 呢～  这个是完整的句子吗？ 有人能帮我解释一下～ 这个是属于形容词做modifier的一种形式吗？

        

dtstruggle

it有明确的指代对象。文中的两个比较对象是“an annual per capita income of $111”和“the most impoverished countries of the world的income水平”。所以it出现即可以指代111，又可以指代“the most impoverished countries of the world的income水平”，有歧义。

1，比较考点的代词都用that或those

2，b这个选项简洁

guangsi

谢谢解释 ~
还有一个问题就是lower than 是做什么成分出现的呢？