解析：At a time when Internet use is expa_考试试题_GRE

【单选题】At a time when Internet use is expanding rapidly, social critics say the technology could______the fragmentation of U. S. society or help to fuse it, depending on how it is useD、
A、attenuate
B、exacerbate
C、simplify
D、eradicate
E、retard
网考网参考答案：B
网考网解析：
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