标题: 逻辑问题求解QAQ [打印本页] 作者: 梦想的蝴蝶 时间: 2015-9-24 15:38 标题: 逻辑问题求解QAQ newspapaer: in the past two decades, unlike white members, black members of the state legislature increased more than 100%. Consequently, political power of blacks and whites will soon bee substantially equal.
which of the following, if true, most seriously weakens the argument above?
A. in the past two decades, there is no change in the total number of seats the state legislature provided
B. two decades ago, state legislators included 168 blacks and 7614 whites.
C in the past two decades, only 5 states elected blacks as governors
D in the past two decades, the incomes of black families increased more than 80%
E in the past two decades, the proportion of blacks who participated in elections increased a lot
答案选的是B，但是我怎么想都觉得B只是个时间点没法代表时间段啊，为什么不是选C呢？
作者: alzn2765 时间: 2015-9-24 17:28
质疑假设类
前提（因）：in the past two decades, unlike white members, black members of the state legislature increased more than 100%.
结论（果）： political power of blacks and whites will soon bee substantially equal.
C说 in the past two decades, only 5 states elected blacks as governors。反例：two decade gao, 黑人立法委员2人，白人立法委员200人。 in the past two decades, only 5 states elected blacks as governors，每个states选出了40个黑人立法委员，白人立法委员0人。结果现在黑人立法委员202人，白人立法委200人--- political power of blacks and whites will soon bee substantially equal 成立啊！