It's generous __ ___ them to donate money to UNICEF. They think it important _____ them to help poor children go to school.
A:to; for
B:for; of
C:of; to
D:of; for
设p:log2x<0,q:12x-1>1,则p是q的 ( ).
直线3x﹣4y﹣4=0被圆x2+y2﹣6x=0截得的弦长为( )
一位运动员在跳马比赛中,不幸摔倒而造成下肢截瘫,可能摔伤的部位是( )
____个圆柱
____个球