2. 外语
  3. In 1948, people living in remote areas could see TV programs by ______ in the United States. Cable systems began tying to use _

In 1948, people living in remote areas could see TV programs by ______ in the United States. Cable systems began tying to use _

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问题 In 1948, people living in remote areas could see TV programs by ______ in the United States.
Cable systems began tying to use ______ to capture the signals from distant stations in the early 1950s.
选项
答案microwave transmitting and receiving towers
解析 本题涉及到在二十世纪五十年代早期的电缆系统的情况。该段首句提到，当时电缆系统开始尝试使用微波传输(microwave transmitting )和接收塔(receiving towers)来获取信号。
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