低渗性缺水，血清尚未出现缺钠之前，尿中氯化钠（）
A.正常
B.略高
C.时高时低
D.减少或缺乏
E.由低到高
参考答案：D
Mary is the only one of the girls who ________ in for sports.
A．go
B．goes
C．have gone
D．have been
______，潮打空城寂寞回。______，夜深还过女墙来。(刘禹锡《石头城》)
