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大全-3-13

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楼主
发表于 2005-8-15 19:32:00 | 只看该作者

大全-3-13

Meteorologists say that if only they could design an accurate mathematical model of the atmosphere with all its complexities, they could forecast the weather with real precision. But this is an idle boast, immune to any evaluation, for any inadequate weather forecast would obviously be blamed on imperfections in the model.



13. Which of the following, if true, would cast the most serious doubt on the eteorologists’ boast, aside from the doubt expressed in the passage above?



(A) The amount of energy that the Earth receives from the Sun is monitored closely and is known not to be constant.


(B) Volcanic eruptions, the combustion of fossil fuels, and several other processes that also cannot be quantified with any accuracy are known to have a significant and continuing impact on the constitution of the atmosphere.


(C) As current models of the atmosphere are improved, even small increments in complexity will mean large increases in the number of computers required for the representation of the models.


(D) Frequent and accurate data about the atmosphere collected at a large number of points both on and above the ground are a prerequisite for the construction of a good model of the atmosphere.


(E) With existing models of the atmosphere, large scale weather patterns can be predicted with greater accuracy than can relatively local weather patterns.



为什么选B呢?我觉得D蛮好的吗。


原题里气象学家说“只要(if only)---”,将建立模型为唯一前提;但是没有D,只有模型而无频繁而正确的数据,那不是就没有意思了,也就cast serious doubt on

沙发
发表于 2005-8-16 02:14:00 | 只看该作者

Pay more attention to the question,especially for the highlight (aside from):


Which of the following, if true, would cast the most serious doubt on the eteorologists’ boast, aside from the doubt expressed in the passage above?  So, D has been consistent with the doubt expressed in the passage above.

板凳
发表于 2005-8-16 09:34:00 | 只看该作者

我的理解:



B说 有很多因素是没法准确量化的因此否定了前提“design an accurate mathematical model of the atmosphere with all its complexities”,也否定了结论“they could forecast the weather with real precision”。


D说 频繁而准确的数据是建模的前提,并没有说这些数据是不存在的。

地板
发表于 2007-2-12 00:07:00 | 只看该作者

题目:气象学家说有了能把各种因素都综合考虑的模型,就能准确预报天气。

B说这种模型根本建不出来,列举了一些因素是根本不能被量化、综合考虑建成模型的。

D说的是建模前期的数据收集也很重要 - 无关。

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