单项选择题

Why is it that the global telegraph network was truly revolutionary

A．It has changed the way we do business and communicate.
B．It makes virtual communities possible.
C．It makes real-time global news service available.
D．It makes world peace.

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热门试题

单项选择题

What does the gem of late 20th century technology” refer to

A．The telegraph.
B．Information theory.
C．Materials technology.
D．The Internet.

单项选择题

What's the relevance to our own time of the struggles of telegraph pioneers

A．They made today's technology work efficiently.
B．They smooth the way for the popularity of today's technology.
C．They made the Internet a global network.
D．They overcame national and international bureaucratic obstacles.