旅客违章携带物品，对不可分拆的整件超重、超大物品及动物，按该件全部重量补收四类包裹运费。（）
参考答案：错
I have __________ the problem for two hours, but I haven't __________.[ ]
A. worked on, worked out it
B. worked at, worked it out
C. worked on, worked it out
我国水资源在时间分配上的特点是（ ）
A．春夏多
B．夏秋多
C．秋冬多
D．、冬春多
