做powerprep软件的时候遇到的语法题，有几个地方相不通。。。请大家帮下忙哈。。。

guanwzy

1、While depressed property values can hurt some large investors, they are potentially devastating for homeowners, whose equity - in many cases representing a life's savings - can plunge or ever disappear.
A.they are potentially devastating for homeowners, whose
B.they can potentially devastate homeowners in that their
C.for homeowners they are potentially devastating, because their
D.for homenwners, it is potentially devastating in that their
E.it can potentially devastate homeowners, whose
我选的B，答案是A，我想问下，A里面的“devastating for”是什么意思啊。。。

2、The Emperor Augustus, it appears, commissioned an idealized sculptured portrait, the features of which are so unrealistic as to constitute what one scholar calls an "artificial face".
A.so unrealistic as to constitute
B.so unrealistic they constituted
C.so unrealistic that they have constituted
D.unrealistic enough so that they constitute
E.unrealistic enough so as to constitute
答案是A，我想问下C为什么不对。。。

3、According to a study by the Carnegie Foundation for the Advancement of Teaching, companies in the United States are providing job training and general education for nearly eight million people, about equivalent to the enrollment of the nation's four-year colleges and universities.
A.equivalent to the enrollment of
B.the equivalent of those enrolled in
C.equal to those who are enrolled in
D.as many as the enrollment of
E.as many as are enrolled in
我选的是C，答案是E，E里面“as many as”前后可比吗？

guanwzy

第3题是不是应该是as many as (people who) are enrolled in啊？
它和这道题是不是一样的？
GWD7-Q4:
Only seven people this century have been killed by the great white shark, the man-eater of the movies—less than those killed by bee stings.
A.movies—less than those
B.movies—fewer than have been
C.movies, which is less than those
D.movies, a number lower than the people
E.movies, fewer than the ones

magicinair

1. A devastating for意思是对。。。是毁灭性的
2. C选项时态不对
3. E选项是as many (people) as are enrolled in