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  3. When the steam engine was invented in the 18th century, it began one of the greatest revolutions in our world. The invention of

When the steam engine was invented in the 18th century, it began one of the greatest revolutions in our world. The invention of

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问题     When the steam engine was invented in the 18th century, it began one of the greatest revolutions in our world. The invention of the petrol engine at the end of the 19th century led to another enormous change in our lives. And the computer is almost certainly going to be no less important an invention than these engines were.
    Just as there was a Stone Age, an Iron Age and so on, we have been living for centuries in a Paper Age, when almost all information was kept and sent on paper. However, to provide us with this paper, numerous trees have to be cut down every year. But now, with the computer, enormous amounts of information can be stored and sent without any paper, using small discs or the Internet.
Computers allow one to send information to others anywhere in the world, through the Internet, and to receive information from them. One can send a long message more quickly from England to Australia, for example, than from one’s house to someone in the garden. Computers are not only used for writing; they can produce diagrams and pictures, and can even be used for playing games. They are a common sight at airports and railway stations, in hotels and restaurants; in fact, almost everywhere.
According to the author, the disadvantage of using paper to keep and send information is that______.
选项 A、too many trees are cut down
B、too much paper is needed
C、it wastes our time
D、it is hard to get enough paper
答案A
解析 细节推理题。题目询问作者认为用纸张存储和发送信息的劣势是什么。从文章中第二段第二句可以找到正确答案。文中提到，为了提供纸张，无数的树遭到砍伐，因此，选项A(太多的树遭到砍伐)为正确答案。
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