订单预测要考虑下列哪些因素？（）
A、卷烟消费需求
B、货源
C、计划
D、销售目标
参考答案：A, B, C, D
—______ Emily is in such a hurry?
—I don’t know. She might run to catch the bus.
A．Do you think why
B．Why you think
C．Why not think
D．Why do you think
渣油的高热值水的基准态为（）。
A.液态水
B.水蒸汽
C.与水的状态无关
D.固态水
