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

出自：华北水利水电大学-水利水电建筑工程-大学英语2

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