The Internet, as _____ means of communication, has been popular since _____ early 1990s.

A. a ; the
B. a ; /
C. a ; an
D. the ; an
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科目：高中英語 來源：0127 模擬題 題型：單選題

The Internet, as _____ means of communication, has been popular since _____ early 1990s.
[     ]
A. a ; the
B. a ; /
C. a ; an
D. the ; an

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