“君子以思患而豫防之（豫同预）”出自于（）
A.《千金要方》
B.《丹溪心法》
C.《易经》
D.《黄帝内经》
E.《空气，水和居地》
参考答案：C
—Jack used to give most of his money to people in trouble. How do you like him?
—Some thinks he might be kind of _______. But more people are grateful to him.
A．silly
B．unhappy
C．afraid
D．frustrating
提示付款的效力表现在哪些方面
