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5G has faster data transmission, lower d...

5G has faster data transmission, lower delay and stronger mobility    the conventional 4G.

A.in charge of

B.in defense of

C.in contrast to

D.in proportion to

 

C 【解析】 考查固定词组辨析。句意:与传统的4G相比,5G有更快的数据传输、更低的延迟和更强的移动性。A. in charge of 负责,主管;B. in defense of 为……辩护;C. in contrast to与……形成对照;D. in proportion to与……成比例。此处指“4G数据与5G数据对比”,故选C。  
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