feifei 逻辑的第39题，小妹求牛人帮翻译~~~~~

小润 · 发表于 2011-7-30 15:28:57

39. Quasars---celestial objects so far away that their light takes at least 500 million years to reach Earth---have been seen since 1963. For anything that far away to appear from Earth the way quasars do, it would have to burn steadily at a rate that produces more light than 90 billion suns would produce. But nothing that burns at a rate that produces that much light could exist for more than about 100 million years.

If the statements above are true, which one of the following must also be true on the basis of them?

A.   Instruments in use before 1963 were not sensitive enough to permit quasars to be seen.
B.   Light from quasars first began reaching Earth in 1963.
C.   Anything that from Earth appears as bright as a quasar does must produce more light than would be produced by 90 billion suns.
D.   Nothing that is as far from Earth as quasars are can continue to exist for more than about 100 million years.
E.   No quasar that has ever been seen from Earth exists any longer.

亲们，这题答案为E。为什么呢？
我选的是D。麻烦帮忙翻译一下！！谢谢啦！

kissgod23 · 发表于 2011-7-30 16:29:24

D选项默认了所有和Q一样远的星球的光都能到达地球，可能也有一些星球和Q一样远，但它们发出的光到不了地球，所以就不需要900b的太阳能，所以就可以存在的更久。

E选项是原文意思改写，任何能从地球看到的星球都活不过100年

feifei 逻辑的第39题，小妹求牛人帮翻译~~~~~

所属分类: GMAT考试

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