一般情况是风量由入料到排料（）
A、依次减小
B、依次增大
C、间错变化
D、无法比较
参考答案：A
旅行社从事旅游业务经营活动，必须投保旅行社责任保险。
The price of the iphone4 is too ________. I'm afraid I can't afford it. [ ]
A. high
B. expensive
C. cheap
D. low
