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标题: OG10 16篇 85题 [打印本页]

作者: bunny_piggy 时间: 2009-4-23 00:28
标题: OG10 16篇 85题
题目：

The passage suggests that which of the following
is a prediction concerning meteor streams that can be derived from both the
conventional theories mentioned in line 18 and the new computer-derived theory?

问从“conventional theories”和"new computer -derived theory"中可以看出什么。

文章中明确指出：“Coventional theories, however, predicted that
the distribution of particles would be increaingly dense toward the center of a
meteor stream.”

而"new computer -derived theory" 证明：“computer-model stream broadened with time”

这个和解释冲突啊，OG的解释说“conventional theories“ 也是说这个orbit会变宽，而不是变窄。难道我又粗心了？？？

作者: lukeleng 时间: 2009-4-25 04:03

the Geminid. The researcher found, as expected,
that the computer-model stream broadened with time. Coventional theories, however,

看however前这句，在会随时间变宽。however不同的是，Coventional theories认为stream中央密度会加大，而computer-model stream 的中央是空的，象个管子

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