通过期货交易形成的价格具有预期性、连续性、公开性和权威性的特点。()
查看答案
结算准备金是指会员为了交易结算在交易所专用结算账户预先准备的资金，是已经被合约占用的保证金。()
A. 正确
B. 错误
听力原文：Q: What can we infer from the conversation？
(11)
A. Someone broke into the woman's house and stole some jewels.
B. She knew how the burglars broke into her house.
C. She didn't know what were stolen.
D. Policemen would arrive next day.
A．She has to post a letter instead.B．She has to turn down the man's request.C．She's not
A. She has to post a letter instead.
B. She has to turn down the man's request.
C. She's not sure if the computer is fixed.
D. She can't send the message right now.
微信支付 
支付宝支付