Reading 9
Cách dùng Prepositons và một số bài Reading 9
... broadcasts in the United States began in 193 9, but television did not really become (9) ___________ until later the Second World War. Between 194 5 and 195 5 there were rapid (10) ___________ in ... By 192 3, Vladimir Zworykin , a Russian, had invented a camera tub that could turn pictures into electric (7) ___________ . By 192 9, Zworykin had built a television system that work. By 193...
Ngày tải lên: 09/05/2014, 20:24
40
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