问题 单项选择题

在运去的20年中,美国黑人议员的数量增加了将近100%,而白人议员的数量则略有下降,这说明,在美国的权力机构中,黑人很快就可和白人拥有相等的政治权力。
以下哪项如果是真的,最有力地削弱了上述论证?()

A.20年前,白人议员的数量是黑人议员数量的近8倍。

B.20年来,黑人参加政治竞选,仍然受到各种特殊的限制。

C.20年来,黑人和白人的中等收入的家庭都增加了大约80%。

D.20年来,黑人中的议员竞选者增加了将近200%,而白人中议员竞选者的数量则基本不变。

E.20年来,美国议员的总额保持基本不变。

答案

参考答案:A

解析:

设20年前黑人议员的数量为X,则20年前白人议员的数量为8X。那么,现在黑人议员的数量为:(1+100%)X=2X;而现在白人议员的数量差不多还是8X。这里,显然说黑人很快就可和白人拥有相等的政治权力是不成立的。

多项选择题
问答题

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