商业银行未经批准在银行间债券市场发行、买卖金融债券或者到境外借款的，由中国人民银行责令改正。（）
参考答案：对
—What do you think made Celia so happy?
— ________ a prize in the recent competition.[ ]
A. As she won
B. Won
C. Winning
D. Because of winning
职业活动环境中，可燃性气体、蒸气和气溶胶的浓度超过爆炸下限(LEL)的( )%会造成职业危害。
A．10B．5C．15D．8
