Unit6 When was it invented SectionB (1a-1e) 导学案（含答案）

八年级（下）英语（11） Unit 2 I’ll help to clean up the city parks.
班级：_____________ 姓名：_____________ 学号：___________
中小学教育资源及组卷应用平台
Unit 6 When was it invented
Period 4（Section B 1a-1d）
【学习过程】
Before class
一、根据句意及汉语或首字母提示完成句子
1.Because of the wet weather, these biscuits are not __________（脆的）.
2.—Celia, do you like the oranges —No. They taste too ________（酸的）.
3.There aren't e_______apples. Let's go to the market to buy some.
4.—Sorry, Amanda, I took your ruler by m________. —It doesn't matter.
5.Tony waited u_________his father came back from work.
二、用所给单词的适当形式填空
6.If you put too much salt in the dishes， they will be ________（salt）．
7.I think this restaurant serves all the __________（customer） well．
8.Tom is too fat because he eats lots of _________（fry） chicken.
9.In Joe's spare time， he often tries to invent something useful. He ________（real） loves inventing.
10.My mother bought two kilos of eggs and three kilos of ________（potato）.
In class
三、根据汉语意思完成句子
11.食用过多的糖会引起健康问题。
Eating too much sugar can __________ _________ health problems.
12.对我们来说,刘老师不仅是个老师还是个朋友。
Miss Liu is _________ ___________ a teacher _________ __________ a friend to us.
13.突然，我想起我没有锁门。
_______ _______ ________ __________， I remembered that I hadn't locked the door.
14.自从我离开家之后，我的家乡已经发生了很大的变化。
Great changes _________ __________ ___________ in my hometown since I left home.
15.毫无疑问，互联网在我们的生活中起着重要的作用。
There is no __________ that the Internet _________ an important ________ in our life.
16.抱歉，我误拿了你的雨伞。
Sorry, I took your umbrella ___________ ____________.
17.这块冰不够厚。
This piece of ice is not ___________ ____________.
18.除非你半途而废，否则你最终会成功。
You will succeed___________ ____________ _________ unless you give up halfway.
19.刚刚这个厨师在鱼上撒了许多盐。
The cook ________ lots of salt ______________ the fish just now.
20.我想这则消息会让他们高兴的。
I think the news will __________ ____________ _________.
After class
四、用所给单词的适当形式完成下列语段
21.Edison _________ many __________. So he was a great ____________.（invent）
22.The ________holiday is coming soon and the whole __________, especially children, is happy. That's because they can have seven days off. （nation）
23.The accident happened so _________that I don't remember much about it. I just remember that there was a _______turn in the road. （sudden）
24.This piece of _______was created by the _________ from Italy two months ago. He really has great ________talent. （music）
25.I'm ________ that I had a ________ trip. It brought me much ________. I bought some gifts for my parents to _______ them. （please）
26.Do you know Uncle Smith He is a famous _________. Many different kinds of books ______________ into different languages by him in the past. Now he has lots of _______________. Do you want to have a look （translate）
五、还原短文，有一项为多余项
The invention of barcodes（条形码） is based on a very simple idea. We only need to give each product a specific number and print it. 27.______ We could simply print the number itself. But this can cause problems. For example, an unclearly printed“seven” could look like a “one” to a computer. It's also true for “three” and “eight”.
28.______ We need a better way of printing numbers so that they can be read correctly at high speed. That's the problem barcodes solve.
Each number in a barcode is shown by seven blocks of the same size. 29._______ For example, the number “one” is shown in turn by two white stripes（条）， two black stripes， two white stripes， and one black stripe. 30._______
A barcode includes different parts and each one provides a specific meaning. The first part of a barcode tells you the country where the product was made. For example, 690-692 is the barcode for China. 31._______ The final part is about the product itself. This is how barcodes work.
参考答案：
Before class:
1. crispy 2. sour 3. enough 4. mistake 5. until 6.salty 7. customers 8. fried 9. really 10. potatoes
In class:
11.lead to 12. not only but also 13. All of a sudden 14. have taken place 15. doubt plays part/role
16.by mistake 17. thick enough 18. in the end 19. put on 20. make them happy
After class:
21. invented inventions inventor 22. national nation 23. suddenly, sudden 24. music musician musical 25. pleased, pleasant, pleasure, please 26. translator were translated, translations
27-31:ADFEC