经营漂流旅游企业为保证漂流工具的安全可靠，应严禁（）。
A.违章服务
B.违章载客
C.违章操作
D.违章载货
参考答案：C
—Where have you been, David? You're late for class again.
—________ My bus got caught in a traffic jam.
A．Yes, so what?
B．Well, how come?
C．Sorry, but I couldn't help.
D．No, it's not my fault.
