问题描述：
一道英语选择题,为什么选它?
The Internet had its __70__ in a 1969 U.S.Defense Department computer network called ARPAnet,which stood for Advanced Research Projects Agency Network.
C.origins \x05D.precedents
我选的是C,但是答案是D
The Internet had its __70__ in a 1969 U.S.Defense Department computer network called ARPAnet,which stood for Advanced Research Projects Agency Network.
C.origins \x05D.precedents
我选的是C,但是答案是D
问题解答：
我来补答展开全文阅读