题目内容
（2014 厦门） It seems very natural that if you have two dollars and add two dollars to them, you have four dollars. But do you know it took man millions of years to be able to think this way? In fact , one of the most difficult things to teach children is the idea of numbers.
In ancient times , when a man wanted to tell how many animals he owned, he had no system（体系）of numbers to use. He put a stone or pebble into a bag for each animal. The more animals,the more stones or pebbles he had. It may explain why the word “calculate” comes from the Latin word “calculus” which means “stone”.
Later on , man used tally marks to count. People would just scratch（划下）a line or tally mark for each object they wanted to count, but they had no word to tell the number.
The next step in the development of the number system was probably to use fingers. Again we have word that goes back to this. The word “digit” comes form the Latin word “digitus”. It means “finger”! And the fact that we have 10 fingers led to the general use of 10 in the system of numbers.
The number system we use today was invented by the Hindus in India thousands of the years ago and was brought to Europe during 8th to 11th century by Arab traders. In this system all numbers are written with the nine digits 1,2,3,4,5,6,7,8,9 and zero. It is decimal system（十进制）, that is, it is built on the base of 10.
1. Man first used ______ for counting.
A.a line or tally mark B. a stone or pebble C. fingers
2. If A and B each scratched three lines for their own objects to be counted, they would probably have ______ objects in all.
A. three B. six C. nine
3.The two Latin words in the text are _______ .
A. calculus and stone
B. digitus and finger
C. calculus and digitus
4. _______invented the number system we use today.
A. The Hindus in India B. Europeans C. Arab traders
5. There are ________ steps in the development of the counting system.
A. two B. four C. five
答案： BBCAB
二、从方框中选择合适的词，用其适当形式填空。
| invent discover find |
1.The camera ______ in 1887 by Joseph Nicephore Niepce.
2.Do you know who _____America?
3.Twenty years later,he_____ his younger brother.
| be used for be used as be used to used to |
4.This big room can _____ our laboratory.
5.The life here is much happier than it _______ be.
6.______you ________your English teacher's pronunciation?
7.Knives _____ cutting things.
二、从方框中选择合适的单词，并用其适当形式填空。
| grow produce make |
1.Tea plants _________ in South China.
2.She _________ clothes for her whole family.
3.He is not allowed to __________ his hair long.
4.His father's factory mainly __________ shoes.
5.The cars ________ in Germany are of better quality than those in other countries.
6.I can't stand the terrible smoke that cigarettes__________.
二、从方框中选择适当的单词或词组填空。每次限用一次。
even though continue without help instead of educated no smoke keep away from make their own decisions 1.You musy __________ the deep water.It's very dangerous. 2.I think I should be abld to manage ___________. 3.Children should be encouraged to _____________ .They can't depend on parents. 4.Children should be __________ to take care of themselves at home. 5.I hope to ______ at school for another year. 6.He took away my dictionary,________ I told him not to . 7.There is __________ without fire. 8.I'm too tired now,I'd like to have a rest _______ playing soccer outside |