一侧肾结核合并对侧肾积水的发生机制是()
A.输尿管口关闭不全
B.输尿管口狭窄
C.膀胱挛缩
D.输尿管下段狭窄正常常合并对侧肾结核
E.以上均不对
参考答案:A, B, C, D
“我去钓鱼了。”译为:_________ [ ]
A. I go fished.
B. I went fishing.
C. I fished.
Not just I but also Tom and Mary _____ fond of watching television.[ ]
A. am
B. is
C. are
D. be