无尿是指24小时尿量小于（）
A.100ml
B.200ml
C.50ml
D.10ml
E.250ml
参考答案：A
The result is so ______ that we can hardly believe it.
A．surprising
B．surprised
C．amazed
D．surprise
二进制数1101(2)化为五进制数为（ ）
A．32(5)
B．23(5)
C．21(5)
D．12(5)
