急性乳腺炎最常发生在产后()
A.1个月
B.2个月
C.3个月
D.4个月
E.5个月
参考答案:A
I could have helped the old man ______ yesterday morning.
A.did I come
B.if I came
C.had I come
D.if I should come
中餐在斟倒酒水时,烈性酒和饮料一般以()为宜。
A.五分
B.六分
C.八分
D.十分