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Cable TV began in 1948 in the USA, but it took 50 years 66 percent of American h

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Cable TV began in 1948 in the USA, but it took 50 years 66 percent of American h

Cable TV began in 1948 in the USA, but it took 50 years________ 66 percent of American households had it．

A．before         B．after          C．unless         D．since

试题答案

A

标签：butusaittookthe

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