The need for television viewing guides is supported by study that shows that viewers tend not to select programs by ________ swi

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问题 The need for television viewing guides is supported by study that shows that viewers tend not to select programs by ________ switching the dial.

选项 A、independently
B、randomly
C、attentively
D、timely

答案B

解析 A.independently独立地,自主地;B.randomly随意地,随机地;C.attentively注意地,留心地; D.timely及时地,适时地。根据句意和逻辑应选B。句意为:需要电视收视指南,是根据研究表明电视观众一般不是通过随意换台来选择节目。
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