请教OG12 CR30题~

zgmlprint

30. Robot satellites relay importantcommunications and identify weather patterns. Because the satellites can berepaired only in orbit, astronauts are needed to epair them. Without repairs,the satellites would eventually malfunction. Therefore, space flights

carrying astronauts must continue.

Which of the following, if true, would mostseriously weaken the argument above

(A) Satellites falling from orbit becauseof malfunctions burn up in the atmosphere.

(B) Although satellites are indispensablein the identification of weather patterns, weather forecasters also make some use of computer projectionsto identify weather patterns.

(C) The government, responding to publicpressure,has decided to cut the budget for space flights and put more moneyinto social welfare programs.

(D) Repair of satellites requires heavyequipment, which adds to the amount of fuel needed to lift a spaceship carryingastronauts into orbit.

(E) Technical obsolescence of robotsatellites makes repairing them more costly and less practical than sendingnew, improved satellites into orbit.

纠结于B和E，最终还是选了B，为什么B不对E对呢？求解大家~

francoisyang

原文的观点是只能在轨道上修，所以要派宇航员去修。
B说卫星不可缺，但电脑也要用。
E说修还不如送新的划算。

zgmlprint

francoisyang 发表于 2014-3-17 15:46
原文的观点是只能在轨道上修，所以要派宇航员去修。
B说卫星不可缺，但电脑也要用。
E说修还不如送新的划算 ...

我理解的b的意思是虽然卫星不可缺少，但有别的方法可以弥补，来为天气预报员提供天气信息。就算没有卫星也可以完成这个目的。这个不算削弱结论成立的可能性吗？求教~

francoisyang

zgmlprint 发表于 2014-3-17 17:13
我理解的b的意思是虽然卫星不可缺少，但有别的方法可以弥补，来为天气预报员提供天气信息。就算没有卫星 ...

原文说了卫星不可缺少，明确了无法替代，需要用到电脑不代表可以代替卫星。

zgmlprint

francoisyang 发表于 2014-3-19 13:11
原文说了卫星不可缺少，明确了无法替代，需要用到电脑不代表可以代替卫星。 ...

哦，这样~恩恩~谢~