九上 M9

2. the activity of buying and selling between people or countries， to do business
3. one side of a paper in a book,
4. advice and information about how to do or use something, often written in a book or on a paper:
11. take and use sth for a short time and then return
12. a book prepared for use in schools or colleges
13. keep something for future use;a large shop where you can buy many different types of goods:
17. correctly, or in a right way:
19. only one, not double or two
20. information or instructions about what to do, where to go, how to do sth, etc.
22. the time someone or something grows or develops某人某个事物成长或者发展的时间，
24. holding as much as it can， not having any empty space
25. the use of science in industry 科学在工业中的应用
26. to give something to someone for a short period of time, expecting it to be given back:
27. a sum of money;a quantity of something tha can not be counted; 钱的总数，某个不可数物品的量
28. to repair sth broken

1. to take the place of something, or to put something or someone in the place of something or someone else:
5. become wider or widely known
6. the telling of someone another person's name the first time that they meet:
7. being able to remember; something that is remembered
8. web pages that are linked连接 together to give information about something or a person, etc.
9. the state of being related to someone or something else: 与某人某事相关的状态
10. the shape of something or the kind
14. having much ower or ability to control or influence
15. widely different;having or showing many different types
16. for the most part;
17. one of the Four Great Inventions of ancient China.the activity or business of producing writing or images照片 on paper or other material
18. something that happens because of something else:
21. things like computers, calculators 计算机and radios 收音机
23. letters and anything else sent or received by post