[求助]T-9-Q29. 987-637，答案是否有误。。。

T-9-Q29.
  987-637

Several studies have found that the coronary patients who exercise most actively have half or less than half the chance of dying of a heart attack as those who are sedentary.

A.    have half or less than half the chance of dying of a heart attack as those who are sedentary

B.    have half the chance, or less, of dying of a heart attack than those who are sedentary do

C.    have half the chance that they will die of a heart attack, or less, than those who are sedentary do

D.    are at least fifty percent less likely to die of a heart attack as those who are sedentary

E.     are at least fifty percent less likely than those who are sedentary to die of a heart attack

这个题给出的答案是E，可是A为什么不对呢？我在new york times上找到了类似的一句话

http://query.nytimes.com/gst/fullpage.html?res=9402E0D61239F935A25754C0A963948260&sec=health&spon=&pagewanted=all

The early studies of the San Francisco longshoremen, the British civil servants and others suggested that coronary patients who are most active have half or less the chance of dying of a second heart attack as those who are sedentary.

那岂不是就跟A差不多么？非常晕，盼牛牛回复！！！

E里面的  at least fifty percent less 是对half or less than half 的改写half or less than half 比较wordy, be less likely to die比 have less the chance of dying，就GMAC而言of doing的形式通常没有be likely to do不定式表意明确，而且die这样的瞬间名词不适合of doing的形式。

大家来帮忙啊。。。想不明白很困惑。。。

谢谢你！！那怎么把A改一下就对呢？那new york times上那句也不对是么？

顶下这道题~~

B为什么错了呢？