1、Unit 4 The Internet connects USLesson 21 Books or computers同步练习 根据汉语意思填空1. When did the worlds first computer _（出现）？2. The _（现代的）technology changes our life.3. How can we use these _（电子的）machines?4. What about _（出售）these computer in low prices?5. I think _（知识）is the most important thing in the world
2、. 介词填空1. People began to write their stories _ paper.2. We can read books _ many different ways.3. Its easy _ us to use this kind of computer.4. All these stories are written _ hand.5. Ancient people passed on what they know _ telling stories. 英汉互译1. 你知道如何造纸吗？ Do you know _ _ _ paper?2. 写一本书要花费很长时间。
3、 _ _ a long time _ _ a book.3. 电子书改变了人们的阅读习惯。 E-books change the peoples _ _.来源:14. 无论你说什么，我都相信你。 _ _ _ you say, Ill believe in you.5. 我们有很多读书的方式。 We have many _ _ _ books. 句型转换1. The history of books is very interesting.（改为感叹句） _ _ the history of books is!2. People can buy things online easily.（改为同
4、义句） _ _ _ people to buy things online.3. She wrote some words on the first page of the book.（改为一般疑问句）来源:Zxxk.Com _ _ _ _ words on the first page of the book?4. It took her a whole day to finish that story.（对画线部分提问） _ _ _ it take her to finish that story?5. I have already read the books about paper.
5、(改为一般疑问句)_ you _ the books about paper _? 阅读理解从 When I take a walk around Washington Square Park, I often see many people walking with their dogs. It is still true that the dog is the most useful and faithful animal in the world, but the reason why people keep dogs have changed. They used to keep do
6、gs in order to keep safe, but now they keep them as friends, because the city can be a lonely place. For a child, a dog is a playmate (玩伴) when he has no little friends to play with. For young couples, a dog is their friend when they feel lonely at home. For old couples, a dog is their child when th
7、eir real children have grown up. Now you can see the reason why people keep dogs.来源:1ZXXK根据短文内容，回答下列问题。（10分）1. Does the writer think a dog is the most useful and faithful animal? _2. Do many Americans keep dogs as pets? _3. Why did people keep dogs before? _4. Why does a child like keeping a dog?来源:
8、学。科。网Z。X。X。K _5. Why do seniors (年长) love to keep dogs? _答案和解析 根据汉语意思填空1. appear 2. Modern 3. electronic 4. selling 5. knowledge 介词填空1. with 2. in 3. for 4. by 5. by来源:1 英汉互译1. how to make 2. It takes, to write 3. reading habits 4. ways to read 句型转换1. How interesting 2. Its easy for 3. Did she write any 4. How long did 5. Have, read, yet 阅读理解从1. Yes, he / she does. 2. Yes, they do. 3. They kept dogs to keep safe before. 4. Because a dog is a playmate when he has no little friends to play with. 5. Because dogs are their children when their real children have grown up.
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