prep-sc-45, 求教

jojolynn

45.   (26929-!-item-!-188;#058&003015)

 

The application of a new method for analyzing the chemistry of tooth enamel allows scientists to examine molars of prehuman ancestors and determining that their diets were more varied than had been supposed.

 

(A) The application of a new method for analyzing the chemistry of tooth enamel allows scientists to examine molars of prehuman ancestors and determining

(B) Through the application of a new method for analyzing the chemistry of tooth enamel, the molars of prehuman ancestors were examined by scientists who determined

(C) When they applied a new method for analyzing the chemistry of tooth enamel, scientists examined molars of prehuman ancestors, determining

(D) Applying a new method for analyzing the chemistry of tooth enamel, the molars of prehuman ancestors have been examined by scientists, who determined

(E) Applying a new method for analyzing the chemistry of tooth enamel, scientists have examined molars of prehuman ancestors and determined

答案是E,

想不通为什么要用现在完成式

另C有什么不好?

jojolynn

还是不明白,求教了!

voyiya

个人认为C选项前半句的they指代不明确。此题可以不先考虑时态。选项B有Though,改变句意。选项D的Applying的动作发出者是scientists，而不是the molars of prehuman ancestors 。A用法不地道。故选E.

[此贴子已经被作者于2007-10-8 21:42:01编辑过]

anntt

C 中的examine 和determine 是独立的、先后顺序的逻辑关系，应该用and并列起来

tigercaiqun

同意楼上的,还有一点就是C中的when用的不对,改变了原来的意思,变成了:当应用...的时候,科学家....

中文好象没啥差别,用英文理解就差远了.GMAT里经常用when从句作为错误选项来混淆视听.按意思应该是,科学家应用....的方法,examine 和determine 了....

同意3楼的,时态不作为首先排除的标准.