— Must I do it now?
— No, you____.[ ]
A. won't
B. needn't
C. can't
D. don't
答案:B
子宫的功能有()
A.输送精子的通道
B.孕育胎儿的场所
C.产生月经
D.正常容量为5ml
E.为一空腔肌性器官