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3、（1分）
Compared with the modem speed the broadband technology can transmit data ________.
A)
at up to forty times of ordinary speed
B)
much more faster
C)
at a high speed
D)
within a second
Compared with the modem speed the broadband technology can transmit data ________.
A)
at up to forty times of ordinary speed
B)
much more faster
C)
at a high speed
D)
within a second
参考答案
