心力衰竭引起的发绀属于（）。
A.心性混合性发绀
B.淤血性周围性发绀
C.肺性发绀
D.混合性发绀
E.缺血性周围性发绀
参考答案：D
— Look, John's fallen asleep at work!
— Oh, he must have ________ late last night.[ ]
A. waken up
B. put up
C. taken up
D. stayed up
年利率为12％，每月计息一次，实际相当于月利率为（）
A.6%
B.12%
C.1%
D.0.5%
