During television’s first 20 years, deaf people missed most of the fun because t

游客2023-08-02  44

问题 During television’s first 20 years, deaf people missed most of the fun because they ______. [br] A decoder is a machine to ______.

选项

答案 make the captions appear on the TV screen

解析 见原文最后一段,If a family had another kind of machine in their home or in their TV set,then the captions(or signals)would appear on their television screen.That special machine is called a decoder.
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