The author seems to say that the invention of the computer is ______. According to the author the disadvantage of using paper t

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问题 The author seems to say that the invention of the computer is ______.
According to the author the disadvantage of using paper to keep and send information is that ______.

选项 A、it is hard to get enough paper
B、it wastes our time
C、it damages the environment
D、there is too much paper around

答案C

解析
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