影响人类行为的主要因素不包括
A.环境因素
B.个人因素
C.相邻因素
D.认知因素
E.社会态度
参考答案:C
-Oh, my God! I can't find my key to the office.
-Don't worry. Perhaps it _________ at your home.
A.left
B.has left
C.was left
D.had left
支付结算的基本原则有哪些