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。