官渡之战交战双方是 [ ]
A．曹操和刘备
B．刘备和孙权
C．曹操和袁绍
D．曹操和孙权
答案：C
“Let's play football after school.”“________.”
A．Goodidea.
B．You'rewelcome
C．Thankyou
D．Yes,ofcourse
宫内节育器不影响哺乳，可用于哺乳期妇女。
