期货交易所的目的是为了不愿承担价格风险的生产经营者提供稳定成本的条件，从而保证生产经营活动的正常进行
参考答案：对
Mr. Green _______ to Beijing two weeks ago. He ______ there many times.
A．has gone; has been
B．went; has been
C．has gone; went
D．went; went
对党员的党纪处分的种类？
