马上要考了,急问一道题GWD10-15

tomatopig

讨论区内没有

GWD-10-Q15

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 recently been made to eliminate interference from nonfunctioning satellites by exploding them in space. This proposal, however, is ill conceived, since     .

 

1. many nonfunctioning satellites remain in orbit for years

2. for satellites that have ceased to function, repairing them while they are in orbit would be prohibitively expensive

3. there are no known previous instances of satellites’ having been exploded on purpose

4. 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    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

答案是E,我选D,请问大家,D为何不对呢?

tomatopig

ykiller111

This proposal, however, is ill conceived, since     . 

题目的目的是说，要证明原文的论证是 ill conceived，

D说，处理这件事的唯一方法是XXX，虽然可以间接削弱文章中提到的那种方法，但是和文章的逻辑过程无光

而E正是沿着文章的思路走，利用前面提到的the number of small pieces of debris in orbit，削弱了爆炸这种方法，从而证明了原文的论证是ill conceived.

从出题者的角度来看，出题者提供的各种信息往往与解题有关，所以，针对原文细节所展开的推论，是正确答案的普遍特征。最明显的例子是prep里面那道大鲨鱼吃小鲨鱼，小鲨鱼吃小鱼从而影响某个地区的经济。

dudulee

d说的是将来的解决方法，对现在轨道上的卫星一点帮助都没有

tomatopig

嗯,谢谢你们的解释,我发现当初看题时太粗心了,没看清题目中的 small pieces of debris ,所以搞不清楚.谢谢

yzhao26

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