题目内容
（请给出正确答案）
In the 1980s, the Internet ______.
A．was under research B．began its commercial use
C．had a limited number of users D．caused frequent attacks from viruses
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更多“In the 1980s, the Internet ___…”相关的问题
A、concealing
B、altering
C、omitting
D、exaggerating
A、Mass media
B、elite media
C、paper media
D、electrical media
A．Technology Concept Principle B．Technique Control Protocol
C．Technical Connected Procedure D．Transmission Control Protocol
A．Navigating the Superhighway without the right knowledge and tools is a waste of time.
B．There are not many ways so far to use the Internet to retrieve information.
C．Java is a useful program.
D．There are various levels of knowledge about cars.
A．How Web pages are put together.
B．How to write software.
C．How to surf the Internet.
D．How to drive cars.
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