题目

p{font-size:10.5pt;line-height:150%;margin:0;padding:0;}td{font-size:10.5pt;}（08年周至二中二模理） 已知等差数列的前项和为，且，则过点和N*)的直线的斜率是  （）         A．4                                B．3                                C．2                                D．135. —Mum, can I listen to music while doing homework?— Don’t even think about it._____. A．The more you get, the more you wantB．Eye for eye and tooth for tooth.C．A man cannot whistle and drink at the same time. D．A bad beginning makes a bad ending