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7. If A, then B.
If B, then C.
If C, then D.
If all of the statements above are true, which of the following must also be true?
(A) If D, then A.
(B) If not B, then not C.
(C) If not D, then not A.
(D) If D, then E.（C）
(E) If not A, then not D.
很迷茫为什么是C, 而不是E. 不太清楚这个推导方向....请教大家一下.
12. Are you still reading the other newspaper in town? Did you know that the Daily Bugle is owned by an out-of-town business syndicate that couldn’t care less about the people of laceName w:st="on">GothamlaceName> laceType w:st="on">CitylaceType>? Read the Daily Clarion, the only real voice of the people of laceName w:st="on">GothamlaceName> laceType w:st="on">CitylaceType>!
Which of the following most directly refutes the argument raised in the advertisement above?
(A) Over half of the advertising revenues of the Daily Clarion come from firms whose headquarters are located outside of laceName w:st="on">GothamlaceName> City.
(B) The Daily Clarion usually devotes more of its pages to out-of-town news than does the Daily Bugle.
(C) Nearly 40 percent of the readers of the Daily Clarion reside outside the limits of Gotham City.
(D) The editor-in-chief and all the other members of the editorial staff of the Daily Bugle have lived and worked in Gotham City for ten years or more.（D）
(E) The Daily Bugle has been published in Gotham City for a longer time than has the Daily Clarion.
偶选的是B.不明白为什么应该选D阿.
请大家帮忙解答下.
另外,偶觉得大全的讨论贴还真不好搜.......   | 
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发表于 2005-8-27 16:31:00
