天山 4-22

Unlike mainstream American businesses, more than half of which fail, the failure rate for
businesses in the Amish community hovers around 5 percent.
A. Unlike mainstream American businesses, more than half of which fail
B. Unlike mainstream American businesses, in which the failure rate is more than
half
C. Unlike mainstream American businesses, where more than half of them fail
D. While the rate of mainstream American businesses failing is more than half
E. While more than half of mainstream American businesses fail

MINE D

ANS E

为什么呢?

首先这题考的是 like/unlike A, B do 结构。 根据平行对称原理，该题不适用与此结构。

D彻底改变原语意。

原句是：Unlike mainstream American businesses, more than half of which fail 是说： 不像那些主流美国商业（后面一句插入语作定语来修饰）超过一般的WHICH（主流美国商业）失败了。

D是说：While the rate of mainstream American businesses failing is more than half 当主流美国商业失败RATE超过一半时

请NEVERBACK MM仔细理解一下，E其实是最好的答案

我的理解，在句意相同的条件下，优先使用动词形式.

fail>failing

D. While the rate of mainstream American businesses failing is more than half
E. While more than half of mainstream American businesses fail

while 意思有好几种, GMAT喜欢用WHILE表示对比, 而不是引导时间

我觉得D 比较工整.  

NN 请确认答案.

我也想请教。我觉得D确实没有E好。但是D错在哪呢？

the rate of failing < the failure rate, the rate is more than half， 是这两个问题吗？

我倒是觉得the rate is more than half 用得很奇怪。后边是the rate is hovers around 5 percent. 前边这个half用得很unidiomatic。感觉half的用法通常是half of。没见过这么用的。