( )是指风险的起源与影响方面都不与特定的人有关，至少是个人所不能阻止的风险。
A．财产风险
B．基本风险
C．静态风险
D．社会风险
参考答案：B
现在你是张明，请给杰克写一封回信。
Dear ___________,
My name is ___________, I study in ___________. I am ___________ years old. My favourite day is
___________. We have ___________, ___________ and ___________. My favourite food is ___________,
because it's ___________. My favourite teacher is ___________. He / She is our ___________. He / She is
___________ and ___________.
Your pen pal,
___________
指标在行情研究中的作用有哪些
