根据利率平价理论，当远期外汇汇率为贴水时，说明本国利率（）。
A．高于外国利率
B．等于外国利率
C．低于外国利率
D．无法确定
参考答案：A
He an important part in putting out the fire. [ ]
A. played
B. took
C. made
D. had
若a，b互为相反数，m、n互为倒数，则（a+b）2010-2012=______．
