图书分类法中，类名之间的同位类关系一般反映了学科概念之间的（）关系。
A.包含
B.排斥
C.延伸
D.相容
参考答案：B
--- Has your brother returned from the USA yet?
---- Yes, but he ____ here for only two days before his company sent him to Australia.
A．stayed
B．has stayed
C．will stay
D．was staying
对托运单的审批和检验包括（）。
A、货物详细情况
B、费率确定
C、有关运输凭证
D、有无特殊运输要求
