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  3. With what topic is the passage primarily concerned? Which of the following is NOT mentioned in the passage as a function of ele

With what topic is the passage primarily concerned? Which of the following is NOT mentioned in the passage as a function of ele

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问题 With what topic is the passage primarily concerned?
Which of the following is NOT mentioned in the passage as a function of electronics in television transmissions?
选项 A、The conversion of an image into electronic impulses,
B、The sending of impulses through a wire cable.
C、The changing of one image into another image.
D、The feeding of impulses into a receiver.
答案C
解析 本题考查通读文章、熟悉文章内容的能力。文章第二段第二句提到了选项中的内容"converting an image into electronic impulses，which can be sent through a wire or cable"第三句讲了"These impulses，when fed into a receiver，can then be..."，而答案选项的内容文章没有提到。
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