GWD-26-Q17，大家怎么看？

GWD-26-Q17

Responding to the public’s fascination with-and sometimes
        undue alarm over-possible threats from asteroids, a scale
            developed by astronomers rates the likelihood that a particular asteroid or comet may collide with Earth.

A.      a scale developed by astronomers rates the likelihood
        that a particular asteroid or comet may

B.       a scale that astronomers have developed rates how
        likely it is for a particular asteroid or comet to

C.      astronomers have developed a scale to rate how likely
        a particular asteroid or comet will be to

D.      astronomers have developed a scale for rating the
        likelihood that a particular asteroid or comet will

E.       astronomers have developed a scale that rates the
        likelihood of a particular asteroid or comet that may

答案是C. 但是我支持D

for也是可以的吧，下面这题

New genetic evidence—together with recent studies of elephants’ skeletons, tusks, and other anatomical features—provide compelling support for classifying
   Africa’s forest elephants and its savanna elephants as separate species.

A.      provide compelling support for classifying

B.       provide compelling support for the classification of

C.      provides compelling support to the classification of

D.      provides compelling support for classifying

E.       provides compelling support to classify

查了一下scale for的用法，New York Times

Dr. Tetsuya Fujita, a meteorologist who devised the standard scale for rating the severity of tornadoes and discovered the role of sudden violent down-bursts of air that sometimes cause airplanes to crash, died on Thursday at his home in Chicago.

而且D是最接近原文的。

原文from New York Times:
To help deal with public fascination -- and sometimes undue alarm -- about possible threats from asteroids, astronomers have adopted a scale that rates the likelihood that a particular asteroid or comet will collide with Earth.
                        

原文from New York Times:
To help deal with public fascination -- and sometimes undue alarm -- about possible threats from asteroids, astronomers have adopted a scale that rates the likelihood that a particular asteroid or comet will collide with Earth.
            

大家讨论

这个。。。GMAT里表目的用to 最好

语言这东西没绝对的 不过GMAT的规则如此