广域网内用于通讯传输装置和介质一般由______提供。( )
A.某个企业 B.多个企业 C.国家电信部门D.国际组织
参考答案:C
Shakespear was able to _______a ______vocabulary than ever before.
A.make use; wider
B.make use of ;wider
C.make use ; wider
D.make use of ; wide
阿片中毒的临床表现分哪几期?