题目内容
(请给出正确答案)
[单选题]
I________ping pong quite well,but I haven’t had time to play since the new year.
A.will play
B.have playe
C.played
D.play
查看答案
如果结果不匹配,请 联系老师 获取答案
A.will play
B.have playe
C.played
D.play
What is Pong?
A.a software
B.a hardware
C.a video game
听力原文:W: let's go playing ping -pong ball.
M : I can't go right now. I have an appointment with my doctor.
Why can't the woman go playing ping -pong ball right now?
A.She must do something else at first.
B.She doesn't like playing ping -pong at all.
C.She cannot afford the time.
D.She has an important appointment with her doctor.
证明:在分配格中可把分配式更一般地写成
q∧(p1∨p2∨…∨pn)=(q∧p1)∨(q∧p2)∨…∨(q∧pn),
q∨(p1∧p2∧…∧pn)=(q∨p1)∧(q∨p2)∧…∧(q∨pn).