估价程序的作用有（）。
A.规范估价行为
B.避免估价疏漏
C.保障估价质量
D.提高估价工作效率
E.保证估价结果的正确性
参考答案：A, B, C, D
---I think _______ask Tim for some advice.
---_______. Last time when I turned to him, he refused to help.
A．you'd rather; I think so
B．you'd better; I'd rather not
C．you have to; I'd rather not
D．you'd better; I think so
证券投资基金在美国被称为( )。
A．单位信托基金
B．证券投资信托基金
C．共同基金
D．信托基金
