鉴别急、慢性肾衰最重要的检查指征是（）
A．贫血
B．肾的大小
C．血肌酐
D．尿素氮
E．尿量
参考答案：B
He has ____ letters to answer and has to work frorm morning to night. [ ]
A. much
B. a great deal of
C. masses of
D. the number of
高血压属于慢性病吗？可以申办门诊待遇吗？如何申请？
