偶也选的B,但系现在觉得A比较好,理由如下: 题目: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?(关键字是红色highlight的部分) 步骤1:找出last sentence of the first paragraph的possible explanation是啥。偶认为正是第二段所说的内容!!亦就是说作者举了一堆关于NGC 4258的东东来解释第一段最后一句话the concentration in M87 might be a cluster of a billion or so dim stars.是不可能对的! 步骤2:找出undermine的内容是啥。那就是找出能most seriously weaken第二段所说内容的选项,那显然是A! open to discuss...  
[此贴子已经被作者于2006-11-7 17:34:12编辑过] |