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 .
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
该题我选的也是D,还是有些糊涂,D为什么说是无关选项呢, 文中说了the proposal recently been made to eliminate interference,也就是eliminate interference是目的,D说实现该目的的唯一手段是……,也就是文中的proposal不能实现该目的,从而驳斥。不知我这个思路哪有问题呀,求牛牛们指点一下,这道题困惑我好久好久了呀………!作者: banglixing 时间: 2010-7-12 22:22