题目是从kenzopeaceMM那里摘录的,在此谢谢她了^_^http://forum.chasedream.com/dispbbs.asp?boardID=22&ID=325588&page=1 ※104. 一个圆, 内接一个四边形ABCD(A在左上角, 其它逆时针方向标示), 其中AB垂直BC, AB=BC=2 角B的对角, 也就是角D是60度, 求四边形ABCD的面积
116. 定义ZZ是一个不含zero的definite number, C是a factor of 60, D是a factor of 240,求D/C是否是ZZ?
119. 某个地区in June, its average temperature is 20;in July, its average temperature is 25.求June & July的least average temperature. A: 5 B:20 C:25 D:30 E:35
154. n is positive integer, 9*n=xyz, xyz is a three-digit number, x=1~9; y,z=0~9, x+y+z=9? (1) x+y+z<15 (2) x+y+z>8 |