GWD-27-Q10黑洞那个

kexin03

Q10:

The skeptics mentioned in the first paragraph would be most likely to agree with the astronomers mentioned in line 13 about which of the following statements concerning the galaxy M87?

1. The speed of the gas whirling around the center of M87 is caused by a dense object that is not a black hole.
2. The concentration of mass at the center of M87 is probably a large cluster of dim stars.
3. The presence of a black hole at the center of M87 is the most likely explanation for the speed of the gas whirling about the galaxy’s core.
4. The speed of the gas whirling around the center of M87 is caused by a large concentration of mass at the core of M87.
5. The gravitational influence of a star cluster would not be strong enough to account for the speed of the gas whirling around the core of M87.

 我选的是C,答案是D,如果按照D的思路，那么就是核心是讨论concentration mass是由什么形成的，所以核心词是mass

可我实在看不出来C哪里错了~~~

请牛牛指点！！！

paulstars

讨论的应该是“M87内部的什么东西导致了gas whirling”，不确定是black hole还是其它large concentration of mass。

C直接提到是 “the presence of a black hole”是不对的，skeptics与astronmer一致的意见是“都是大量集中的物质导致了gas whirling”，但skeptics认为是“cluster of stars”而不是“black hole”

[此贴子已经被作者于2008-7-13 12:33:18编辑过]

笨笨可可

Most astronomers believe that the large concentration of mass at the galaxy’s center is a black hole whose gravity is causing the gas to whirl. A few skeptics have argued that the concentration of mass necessary to explain the speed of the whirling gas is not necessarily a black hole: the concentration in M87 might be a cluster of a billion or so dim stars.

这里的题目要求你找到大部分的天文学家和一些少数怀疑学者的共同点。。

相应的句子就是上面的划线部分。。

首先MM要了解文章的内容。。大部分的天文学家认为一些高浓度的物质引起了气体的绕着M87的中心转，而且认为这写高浓度的物质是黑洞。

怀疑学者认为：一些高浓度的物质确实引起了气体的速度，绕着M87转，但是不承认这是黑洞，认为是一些灰暗的行星。。

他们的关键不同就是这个物质到底是什么，但是都承认这个物质导致的一些行为。。

1. The speed of the gas whirling around the center of M87 is caused by a dense object that is not a black hole. --错，这是怀疑学者单面的想法，不是共通的。

1. The concentration of mass at the center of M87 is probably a large cluster of dim stars. --也是怀疑学者单面的想法。。
2. The presence of a black hole at the center of M87 is the most likely explanation for the speed of the gas whirling about the galaxy’s core. --错，这是大部分天文学家的观点，不是怀疑学者的观点。。
3. The speed of the gas whirling around the center of M87 is caused by a large concentration of mass at the core of M87. 对。。
4. The gravitational influence of a star cluster would not be strong enough to account for the speed of the gas whirling around the core of M87.--原文没有说