51. While Jackie Robinson was a Brooklyn Dodger, his courage in the face of physical threats and verbal attacks was not unlike that of Rosa Parks, who refused to move to the back of a bus in Montgomery, Alabama.
A. not unlike that of Rosa Parks, who refused
B. not unlike Rosa Parks, who refused
C. like (Rosa Parks and her refusal
D. like that of Rosa Parks for refusing
E. as that of Rosa Parks, who refused
 
1.比较结构： 比较结构对象合理。（一级排除B,C）
: in B, Jackie Robinson's courage is compared to Rosa Parks herself, not to her courage, and in C it is compared to both Rosa Parks and her refusal
 
2.逻辑意思保持：（二级排除D,E）
not unlike  不等于 like / as  ； 从句改变成并列句会造成句子意思改变。
 
3. 修饰：（二级排除D）

for …介词短语的逻辑主语优先指向句子主语。

Choice D does not make clear whether it was Jackie Robinson or Rosa Parks who showed courage in refusing to move to the back of the bus(逻辑意思表达的准确性，介词短语做状语到底修饰谁？); in fact, saying for refusing rather than who refused makes it sound as if courage moved to the back of the bus (for 短语做主语应该优先修饰句子主语).
 
as 与like的区别
1. 表示象...一样时, as接从句, like 接短语
Do everything as I do. 象我一样做。
He is/looks like his mother. 他长得像他妈妈。

2. as当介词接短语时,表示作为...不是象...一样的意思.like 当动词时,是喜欢的意思,不要搞混为象...
We should study as Lenin studied. 我们应该像列宁那样学习。
As a League Member,I should take everything in the lead. 作为一名团员，我应该起带头作用。