屋顶坡度的表示方法有（）、（）和（）三种。
参考答案：斜率法；百分比法；角度法
Since I won the big prize, my telephone hasn't stopped ringing. People ______ to ask how I am going to spend the money.
A．phone
B．will phone
C．were phoning
D．are phoning
下列药材中采用"发汗"法加工的是（）
A.肉桂
B.厚朴
C.黄柏
D.牡丹皮
E.秦皮
