(36分)A Calling the future When American inventor Alexander Graham Bell invented the telephone in 1876, it was a revolution in communication. For the first time people could talk to each other over great distances.Over the last two decades a new means of spoker communication has appeared: ...
由第一段第一句“When American inventor Alexander Graham Bell invented the telephone in 1876…”可知,1876年电话被发明出来,故电话已经被发明出来了147年,故填147 years. (2)题详解: 由第二段第三句“the users move out of range of each other’s broadcast area, the signal is lost.”可知,一旦用...
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Read more Helpful Reply Martin Guest September 9, 2017, 3:18 pm Kalboz, Actually tipping was not invented by businesses. The use of a "baksheesh" (or even an outright bribe) goes back to ancient times and was practiced by merchants in the Middle East. but it was generally a special ...