下列操作插入关键帧是()
A、F6
B、F5
C、Windows2000
D、RedHatLinux
参考答案:A
_____ hard, you will succeed.
A.Having worked
B.Being worked
C.To working
D.Working
一个数只有1个因数,这个数是______,它既不是______数,也不是______数.