存本取息的每期利息可视为( )。
A．即付年金
B．递延年金
C．先付年金
D．永续年金
参考答案：D
解析： 存本取息的每期利息可视为永续年金。
The student asked her professor if he would have gone on the space ship he did know earlier.
A．if he knew
B．if he knows
C．he had known
D．had he known
温经汤的主治中没有的是（）
A.月经过多
B.少腹急痛
C.口干口苦
D.经水不来
E.久不受胎
