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? | 
