Did you notice the number on the book in a library? That number is part of the system used by libraries to organize their collections of books. And it’s used in many countries. The number on each book tells you exactly what kind of book it is. This system is also useful for knowing where to go in the library to find a book.

In this system, there are ten large groups of books. Each of these groups has its own number, such as 100, 200, etc. So, for example, any books about language will have a number 400. On the other hand, any books about history will have a number 900. So, a number in the hundreds place tells you what general group a book is in. If you find a book that has a number in the 500s, you know it is a book about science.

However, science is a big group, so the tens place is used to make a more detailed set of science books. For example, math books are included in the group of science books. Math books all have numbers between 510 and 519. Books about the history of Africa have numbers between 960 and 969.

The system uses the ones place to give a more exact limit for the subject of a book. A book on the history of South Africa will have the number 968.

As you can see, it is a simple system to use as long as you understand what the numbers mean. With this system, the library can keep its books well organized, and people can easily find the book that they want.

1.The reading is about       .

   A. libraries

B. working in a library

   C. how numbers are organized

D. how books are organized in libraries

2.The number system is NOT used to       .

   A. find where a book is 

B. tell you the title of a book

   C. tell you what kind of book a book is        

D. organize the collections of books in libraries

3.According to the reading, which sentence is TRUE?

   A. The number on a book can’t be bigger than 900.

   B. There are ten big groups for books in this system.

   C. History books can have any number between 500 and 900.

   D. This system uses both numbers and letters for some books.

4.A book about math can be found in the same group of books as       .

   A. reference books   B. school books     C. science books   D. art books

5.Which two numbers would indicate a book about language and a book about science?

   A. 439 and 493       B. 439 and 568      C. 530 and 560     D. 563 and 436

Li Shizhen was born in 1518. His father was a poor doctor. Li Shizhen often saw that people fell ill. He decided to study medicine so that he could be able to help people. Li Shizhen read many books about medicine. He found many of the old medical books to be full of mistakes. So his wish was to write a new one.
He did his best to study medical science. He studied not only the herbs（草药）in his own garden, but also the wild ones. He set out many times on long journeys to collect herbs and talk with old farmers. He learned a lot from the working people.
After many years of hard work and study, Li Shizhen finished his great work “Ben Cao Gang Mu”（本草纲目）. At that time he was sixty. His book is now one of the greatest contributions（贡献）of the Chinese people to the medical science of the world.
【小题1】Li Shizhen’s father was       .

A: Hello, Daming!  1           

B: I’m looking for a book called Robinson Crusoe.

A: What’s it about?

B:    2   The hero in the book is a castaway(乘船失事的人).

A:   3   Tell me more about it.

B: He lives on the island for twenty-eight years. In the end he is saved and comes back home.

A:    4  

B: It first came out in 1719. It’s really a great book.

A: It’s a pity that I haven’t read it.

B: Oh, here is it. If you like, after I finish it, I can lend it to you.

A:    5   Thanks a lot.

B: You’re welcome.

Do you like the book _______ is yellwo?

China is a large country of agriculture（农业）.We all know that there are more than 800 million 44  in China. China starts to  45  the science of agriculture much earlier than other countries in the world. While people in Europe and America were trying to shoot wild animals and birds for food, farmers in China were  46  the science of agriculture. For example, Jia Sixie, who lived in the Northern Wei period（386-534 AD）,was one of the farming pioneers. After he finished his work in government, he 47  home and spent his time on research into agriculture. He 48  information, did experiments and learnt from the experience of farmers. He wrote a book called Qi Min Yao Shu. The book 49  has 110000 words is about both farming and gardening. This book is 50  to be an important summary（概要）of the knowledge of farming.

1.A、workers   B、farmers   C、pioneers   D、scientists

2.A、develop   B、grow   C、choose   D、interest

3.A、trying   B、working   C、studying   D、growing

4.A、left    B、built    C、destroyed    D、returned

5.A、advised   B、improved   C、collected   D、planted

6.A、who   B、whom   C、it   D、which

7.A、made   B、considered   C、kept   D、studied