The appearance of the book has marked a new___in the history of the question.
选项:
A: discovery
B: opening
C: beginning
D: Era
发布时间:2024-06-07 18:22:40
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discovery
B:opening
C:beginning
D:era
the beginning of the era of fiber communication
B:the start of the data communicating
C:the beginning of the new era of telecommunication
D:the start of the era of information