对实施卫生注册的货物，未经产地检验检疫机构检验并签发换证凭单的，口岸检验检疫机构不受理报检。（）
参考答案：对
(2011·上海高考)Today we have chat rooms, text messaging, emailing ... but we seem ________ the art of communicating facetoface.
A．losing
B．to be losing
C．to be lost
D．having lost
在井下可用铁丝、铜丝代替保险丝。
