肾部分切除术适用干
A．肾部分裂伤B．肾一侧严重裂伤C．全肾广泛裂伤D．开放性肾损伤，伤口漏尿，污染。E．肾挫伤
参考答案：B
祖冲之推算出圆周率精确数值，要比欧洲早_______年[ ]
A、500多
B、700多
C、900多
D、1000多
—Who is your favorite singer, Julia?
—Well,it's hard to say. I like singers ____ write their own lyrics. [ ]
A. who
B. whose
C. which
D. what
