博智教育、GMAT培训、GMAT每日一题。
指导教师：英吉
Which of the following most logically completes the argument below?
Although the number of large artificial satellites orbiting the Earth is small compared to the number of small pieces of debris in orbit, the large satellites interfere more seriously with telescope observations because of the strong reflections they produce.
Because many of those large satellites have ceased to function, the proposal has recently been made to eliminate interference from nonfunctioning satellites by exploding them in space. This proposal, however, is ill conceived, since .
(A)many nonfunctioning satellites remain in orbit for years
(B)for satellites that have ceased to function,repairing them while they are in orbit would be prohibitively expensive
(C)there are no known previous instances of satellites' having been exploded on purpose
(D)the only way to make telescope observations without any interference from debris in orbit is to use telescopes launched into extremely high orbits around the Earth
(E)a greatly increased number of small particles in Earth's orbit would result in a blanket of reflections that would make certain valuable telescope observations impossible
题目分析：原文比较简单，就是卫星产生反射，干扰观测，为了消除干扰，最近准备把卫星炸了。问驳斥这个计划。A说很多卫星在这里呆了很多年了，呆了很多年和我炸卫星是否靠谱没什么关系，杀。B说修理费用高低，扯得很远，杀。C说以前是否炸过卫星，以前炸没炸过和我准备炸有什么关系，杀。D说消除干扰的唯一方式就是把望远镜打到比较高的轨道上，没说，杀。E说在轨道上有很多的particles也能产生反射并且干扰望远镜观测，那那把卫星炸了不就没用了嘛，还有别的反射源，选这个！
