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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 contrast to C.in defense of D.in proportion to

 

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