根据《合同法》的规定,合同生效后,当事人发现合同对价款的约定不明确的,首先应当采用 ( )确定。
A.协议补充的方法
B.交易习惯
C.订立合同时履行地
D.合同有关条款
参考答案:A
— Does your sister remember to return the library book today?
— Oh, yes. Thank you. She's ______ it for two weeks. [ ]
A. kept
B. had
C. borrowed
D. keeping
抗逆力理论侧重于对案主()的挖掘。
A.个性因素
B.共性因素
C.保护性因素
D.社会性因素