求助TN24里的一道阅读题

Seajinking

1. GWD-27-Q10-Q12 黑洞存在的研究

Which of the following, if true, would most clearly undermine the possible explanation for the whirling gas in M87 that is mentioned in the last sentence of the first paragraph?

               

A. The stars in a star cluster at the center of M87 could exert a strong gravitational force without tearing the cluster apart.

B. A cluster of stars at the center would preclude the existence of certain other astronomical phenomena that have been observed at the center of M87.

C. The stars within many existing galaxies, such as NGC 4258, are more closely spaced than are the stars within the core of M87.

D. Only one other galaxy has been observed to contain gas clouds whirling about its center as they do about the core of M87.

E. The gravitational force of a cluster of a billion or so dim stars would be sufficient to cause a whirling ring of gas and dust to collect around the center of a galaxy.

原文就不贴了，做过的同学可以看一下，我觉得这道题没有答案吧？除非把A里的“without”改成肯定的意思