累进利率债券是按债券( )划分的种类。
A．有无担保
B．是否记名
C．可否提前赎回
D．票面利率是否变动
参考答案：D
— It has been dry for a few months.
— You’re right. There is twice ____ rain this year than _____ of last year.
A．more; it
B．less; that
C．more; that
D．less; it
全口义齿排牙时上颌第一磨牙近中舌尖应（）
A.接触平面
B.离开平面0.5mm
C.离开平面1.0mm
D.离开平面1.5mm
E.离开平面0.1mm
平面