og14讨论

forgmat66

还 是 不 明 白 ， 27楼 中 的 问 题 一 ， 划 黄 线 的 部 分 是 修 饰 actual observation 的 吗 ？ 可 是 第 二 三 段 讲 的 不 是 模 型 的 结 果 吗 ？

lhc

阅读There is no reason why the Earth should always pass through the stream’s exact center, so the time interval between the two bursts of activity would vary from one year to the next.。是什么意思？

so 后半句也是否定的？偶觉得有歧义？

anniya

就是说他又的时候从中间穿过，有的时候从边上，所以时间是不一定的

我想问一下第81题

81. According to the passage, which of the following is an accurate statement concerning meteor streams?
(A) Meteor streams and comets start out with smiliar orbits, but only those of meteor streams are perturbed by planetary gravittion.
(B) Meteor streams grow as dust particles are attracted by the gravitational fields of comets.
(C) Meteor streams are composed of dust particles derived from comets.
(D) Comets may be composed of several kinds of materials, while meteor streams consitst only of large dust particles.
(E) Once formed, meteor streams hasten the further disintegration of comets.

b选项为什么错？

Astronomers have hypothesized that a meteor stream should broaden with time as the dust particles’ individual orbits are perturbed by planetary gravitational fields.

这句话不就是选项么？

og解释说it is planetary gravitation, not the gravitational fields of comits, that cause meteor streams to increase in size.可是文章里明明是are perturbed by planetary gravitational fields嘛！

anniya

？？？

难道这个问题简单到没有人愿意回答？？。。。

cw_chan

b选项为什么错？

答ANNIYA:

Astronomers have hypothesized that a meteor stream should broaden with time as the dust particles’ individual orbits are perturbed by planetary gravitational fields.

这句话不就是选项么？

og解释说it is planetary gravitation, not the gravitational fields of comits, that cause meteor streams to increase in size.可是文章里明明是are perturbed by planetary gravitational fields嘛！

文章自始至终只谈Plantery gravtional 的影响(行星的万有引力),没谈comet gravational 的影响.

据说,类似问题找文章中首次出现的地方。

哈佛情人

这篇文章我也读得糊里糊涂，部分题作了2遍还错了

这是我写的逻辑简图，欢迎大家批评指导。

套路：新Model解释现象（Meteor Stream）

第一段：Meteor Stream的形成概括和新Model和Conventional理论

Thess Partical...but due to...

Astornomers Hypothesized ...

A reconet computer-modeling..

The researher found..

Conventional theories, however..

Surprisingly...Resemble thick -wall hollow pipe

第二段：用新Model解释流星雨的形成

Whenever..

Two brief periods...would be (表示假设）。。one as ..and one as ..

no Reason why...so

第3段：Model的Prediction

Time intervel suggest...

kevin5

以下是引用anniya在2006-6-17 22:07:00的发言：

就是说他又的时候从中间穿过，有的时候从边上，所以时间是不一定的

我想问一下第81题

81. According to the passage, which of the following is an accurate statement concerning meteor streams?
(A) Meteor streams and comets start out with smiliar orbits, but only those of meteor streams are perturbed by planetary gravittion.
(B) Meteor streams grow as dust particles are attracted by the gravitational fields of comets.
(C) Meteor streams are composed of dust particles derived from comets.
(D) Comets may be composed of several kinds of materials, while meteor streams consitst only of large dust particles.
(E) Once formed, meteor streams hasten the further disintegration of comets.

b选项为什么错？

Astronomers have hypothesized that a meteor stream should broaden with time as the dust particles’ individual orbits are perturbed by planetary gravitational fields.

这句话不就是选项么？

og解释说it is planetary gravitation, not the gravitational fields of comits, that cause meteor streams to increase in size.可是文章里明明是are perturbed by planetary gravitational fields嘛！

反了，不是comets自身的gravitational fields 的attracted ，而是其他planetary gravitational fields。

设想：如果是comets自身的，那么Meteor streams 的变化趋势应该是收缩，而不是“grow”。

cattsky

这篇文章我惊天地泣鬼神的做了20分钟，连懵带猜虽然全做对了，但这在考场上是不可能的。

很多题在定位的时候虽然知道文章中肯定提过，但就搞不清是否与问题相干。

大家对于做这种科技文有什么好方法吗？

tankobe

这篇文章我惊天地泣鬼神的做了20分钟，连懵带猜虽然全做对了，但这在考场上是不可能的。

很多题在定位的时候虽然知道文章中肯定提过，但就搞不清是否与问题相干。

大家对于做这种科技文有什么好方法吗？

-- by 会员 cattsky (2006/8/4 16:44:00)

对着逻辑性不是很强，且带有大量描述的文章.....我基本上什么都记不住.....通常是前4题对，后4题错。

晓澜静荷

ring_cheng 发表于 2005-3-15 22:58
接着前面fair_sword的说法： OG在解释中将Astronomers have hypothesized............的扩散理论认为是传统 ...

这位大牛实在是一语点醒梦中人啊！！！看了Manhattan的解释都没有搞清楚，高手在民间！太赞了！