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英语阅读题,急 

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英语阅读题,急
 
46.选B Is it the written word that helps us record information?
47.选C He says the most important invention might be right in front of our eyes.He is talking about a simple pair of glasses
48.选 A scientists or teachers who could not see properly had to memorize everything.
49.选C People who wanted to remember information could write it down and read it
50.选B Eyeglasses are one of the world’s greater inventions and were probably worn by the people who designed the first telephone and car.