9个人组成投票体，民主地决定各种议案，议案获得通过需要5票或5票以上。此时每个人的权利均等。一旦其中出现5个或5个以上的人结盟，那么其余的人实际上已被出局。若9个人形成4个联盟，人数分别为3、3、2、1，每个联盟的权利不再相等。
由此推出结论( )
A．人数分别为3、3、2的权利相等，人数为1的联盟权利为0
B．若9人形成3个联盟，这3个联盟的人数分别为4、3、2
C．若9人形成3个联盟，各联盟拥有的权利相等
D．人数分别为3、3、2的权利相等，人数为1的联盟权利为1
参考答案：A
解析：因为人数为1的联盟与其他任何一个联盟组合，对选票的结果都没有实质的影响，所以其权力为零。
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| Is your schoolbag too heavy? The e-schoolbag will help you. It is said that e-schoolbags are going to be brought into 1 in Chinese middle schools soon. Heavy schoolbags have been a serious 2 for a long time. But the e-schoolbag will 3 . An e-schoolbag is 4 lighter than a usual schoolbag. Perhaps, the e-schoolbag should be 5 an e-textbook. It is a small computer for students. It is as 6 as a usual book, 7 it can still have all the things for study, such as textbooks, exercise books and so on which can be made 8 chips (芯片) like stamps. The students can read the text page by page on the screen, take notes, or even send e-mails to their teachers. They only need to 9 the right chip into the e-schoolbag. Then they can use it. Some people say 10 e-textbooks can be easily broken, while others say it is not good for eyes. But only time will tell. | ||||
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