GWD 26-17

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.

Answer:c

mine:e

1)通过responding,很容易排除a,b

2)be to do表将来,will也表将来,c中的will be to collide太awardward了吧?

3)原句用may,根据xdf原则,原句出现的情态动词不能轻易改变,所以我选择e

4)当然e也不事没有毛病,likelihood of a particular asteroid or comet 不合适,应该是彗星撞地球的可能性,而不是小行星＆彗星的可能性.

5)还有,e中likelihood是可能性,may也是可能性,是不是重复?redundant?

但总体衡量一下c中有严重错误will be to do还是选择e

c直接说how likely a particular asteroid or comet will collid with earth就好了啊.

怀疑是不是xdf背题的时候记错了c的选项?

我现在也觉得答案有问题,C肯定不对

D一前讨论过的,但终觉得for rating 不好

E-may是不是有重复

e是对的

Astronomers, to help deal with public fascination, and sometimes undue alarm, about possible threats from asteroids, devise scale that rates likelihood that particular asteroid or comet will collide with Earth;

Comets - News - Science - The New York Times - [ 翻译此页 BETA ]
            

E选项的may和likelihood绝对重复了，原文上没有用may啊。

c选项的结构是be likely to do……，用how问likely的程度，怎么错了呢？

E不对吧～LIKELIHOOD后面是OF哎~,是COLLISION的可能性啊,E变成a particular asteroid or comet的可能性了,应该用THAT,C和D我分不清楚哎

我选了C,但是我的答案给的D

will be to的用法不是很清楚对不对

但是表示目的用to do比for doing好,并且how likely比the likehood that简洁

所以我觉得c比d 好一点

代入正确答案：

Responding to the public’s fascination with-and sometimes undue alarm over-possible threats from asteroids, 
                astronomers have developed a scale to rate （how likely a particular asteroid or comet will be) to collide with Earth.                                                                                 主语             谓语     宾语    宾补                        宾补中的宾语（how到结束）是由how疑问词引导的名词性从句，其一般句式就是a partucular asteroid or comet will be likely to collide with Earth. 我不知道如何从语法上叙述清楚。但根本不是什么be to do表示将来. 举个例子： i just want to know how sure you are to win the game.