1、有五對(duì)夫婦圍成一圈,使每一對(duì)夫婦的夫妻二人動(dòng)相鄰的排法有( ) A 768種 B 32種 C 24種 D 2的10次方中 解:根據(jù)乘法原理,分兩步: 第一步是把5對(duì)夫妻看作5個(gè)整體,進(jìn)行排列有5 4 3 2 1=120種不同的排法,但是因
1.___are good friends and should help each other. A I ,you, he B. You,he and I C. He .you and I D.You,I and he 2.Who taught ___English last term? Was___Mr Simth? A your it B your he C your that 3.___