春秋时代红、黄两色已确定为宫廷建筑专用色。明代明确规定了红、黄两色的皇家专色。( )P112
参考答案：对
— Sorry, I have to _____ now. It's time for class.
— OK, I'll call back later. [ ]
A. hang up
B. break up
C. give up
D. hold up
该病例应首先考虑为
A．风湿性心脏病二尖瓣关闭不全B．风湿性心脏病二尖瓣狭窄C．风湿性心脏病主动脉瓣狭窄D．风湿性心脏病主动脉瓣关闭不全E．风湿性心脏病双瓣膜病变
