全血NPN的正常值范围是()
A.20~35mg/dl
B.6.5~8.0g/dl
C.80~120mg/dl
D.110~200mg/dl
E.30~40mg/dl
参考答案:A
—Tom, why did you make no reply to me when I called your name in the street just now?
—Sorry, Jim, I_______ to my wife on the phone.
A.talked
B.was talking
C.am talking
D.had talked
承兑是各种票据都有的一种票据行为。( )