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标题: 36套EX3一道题 [打印本页]

作者: david-ding 时间: 2013-8-7 16:50:28 标题: 36套EX3一道题

The dark regions in the starry night sky are not
pockets in the universe that are devoid of stars as
had long been thought. Rather, they are dark because
Line of interstellar dust that hides the stars behind it.
5 Although its visual effect is so pronounced, dust is
only a minor constituent of the material, extremely
low in density, that lies between the stars. The average density of interstellar material in the vicinity of our Sun is 1,000 to 10,000 times less than the best terrestrial
10 laboratory vacuum. It is only because of the enormous interstellar distances that so little material per unit of
volume becomes so significant. Optical astronomy
is most directly affected, for although interstellar gas
is perfectly transparent, the dust is not. (125 words)

2. It can be inferred from the passage that it is
because space is so vast that
(A) little of the interstellar material in it seems substantial
(B) normal units of volume seem futile for measurements
of density
(C) stars can be far enough from Earth to be obscured
even by very sparsely distributed matter
(D) interstellar gases can, for all practical purposes, be
regarded as transparent
(E) optical astronomy would be of little use even if no
interstellar dust existed

文章其实蛮简单..但不理解为什么题选B.求指点

作者: taleser 时间: 2013-8-7 18:20:22

我记得这题答案是C啊...

作者: SoohooBai 时间: 2013-8-7 18:26:28

这个题的答案绝对是C。。。。。楼主好好检查下资料是不是错了。如果是别的我可能还会记错，但是给B的话，绝对不对啊。。。正文没提到volume unit什么的概念。

作者: david-ding 时间: 2013-8-7 20:27:52

SoohooBai 发表于 2013-8-7 18:26
这个题的答案绝对是C。。。。。楼主好好检查下资料是不是错了。如果是别的我可能还会记错，但是给B的话，绝 ...

抱歉是c..问下为什么？

作者: david-ding 时间: 2013-8-7 20:28:20

taleser 发表于 2013-8-7 18:20
我记得这题答案是C啊...

是c..我错了

作者: linger0527 时间: 2013-8-7 20:32:53

定位It is only because of the enormous interstellar distances that so little material per unit of volume becomes so significant

作者: david-ding 时间: 2013-8-7 20:36:40

linger0527 发表于 2013-8-7 20:32
定位It is only because of the enormous interstellar distances that so little material per unit of vo ...

谢了..完全把sparse理解成稀疏的意思了..

作者: taleser 时间: 2013-8-7 20:38:46

david-ding 发表于 2013-8-7 20:28
是c..我错了

定位同楼上，enormous interstellar distances对应选项的far enough, so little material per unit of
volume对应选项very sparsely distributed matter

作者: david-ding 时间: 2013-8-7 20:51:31

taleser 发表于 2013-8-7 20:38
定位同楼上，enormous interstellar distances对应选项的far enough, so little material per unit of
v ...

嗯..infer什么还真是要多练练,文章不看懂还不行..

作者: linger0527 时间: 2013-8-7 21:15:30

我在百度文库里下了一套【尚友制造】36套阅读解析你可以参考一下

作者: david-ding 时间: 2013-8-7 21:35:05

linger0527 发表于 2013-8-7 21:15
我在百度文库里下了一套【尚友制造】36套阅读解析你可以参考一下

相当详细。多谢分享~

作者: david-ding 时间: 2013-8-7 21:41:04

linger0527 发表于 2013-8-7 21:15
我在百度文库里下了一套【尚友制造】36套阅读解析你可以参考一下

发现论坛里居然就有打了个包的...不用到百度一篇一篇下了 - -

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