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Lesson 21 Books or Computers?
第21课 书还是电脑？
The history of books is very interesting.
历史书非常有趣。
In ancient times,there were no books, and people passed on their knowledge by telling stories.
在远古时代，这儿没有书，人们通过讲故事来传播知识。
Later,people learned how to write and make paper.
晚些时候，人们学会了写字及造纸。
With paper,people began to write down their stories.
有了纸，人们开始写故事。
They wrote each word by hand.
他们用手写下每个字。
It took a long time to write just one book!
写完一本书需要花费很长的时间！
Then, the printing press appeared and changed the world.
然后，印刷机出现了，并改变了世界。
With modern technology,it was possible to print books quickly.
有了现代技术，快速印刷书本变得可行。
It was also possible for common people to read books.
让普通人读书也成为可能。
Recently, computers and the Internet changed the world again.
最近，电脑和网络又改变了世界。
A new kind of book appeared:the electronic book(e-book).
一种新型的书出现了：电子书（e-book）。
E-books are quickly changing people's reading habits.
电子书快速的改变着人们的阅读习惯。
It is easier for people to buy and sell books online.
人们在网络上买书和卖书更加方便。
Information travels faster and farther.
信息传播得更快更远。
Nowadays, people have many ways to read books.
如今，人们有很多方式来读书。
No matter what you have,a computer,a tablet, a laptop,an e-reader or a real book, keep on reading!
不论你有什么，电脑、平板、笔记本、电子阅读器或一本真正的书，请保持读书！
Which invention do you think is more important - the printing press or the Internet?
你认为哪种发明更加重要？印刷机还是网络？
