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Predicting the future can be difficult．There are many famous predictions that 　　1　　 came true．Before 1929, there was no 　　2　　 in movies．The head of one of the biggest movie companies in the United States predicted that no one would want to see 　　3　　 talk．Of course, he was 　　4　　!In 1977, the head of the largest computer company in the United States said,“No one will want to have a 　　5　　 in his or her home．”He thought that computers would never be used by most people．

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