题目内容
15.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"fingers"!And the fact that we have 10fingers led to the general use of 10in 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 1,2,3,4,5,6,7,8,9and zero.It is decimal system(十进制),that is,it is built on the base of 10.
57.Man first usedB for counting.
A.three B.a stone or pebble C.fingers
58.If A and B each scratched three lines for their own objects to be counted,they would probably haveB objects in all.
A.three B.six C.nine
59.The two Latin words in the text areC.
A.calculus and stone B.digitus and finger C.calculus and digitus
60.A Invented the number system we use today.
A.The Hindus in India B.Europeans C.Arab traders
61.There areB steps in the development of the counting system.
A.two B.four C.five.
分析 文章主要介绍从古代到现在用数字表示东西多少的演变过程.
解答 57-61 BBCAB
57.B;细节理解题,根据He put a stone or pebble into a bag for each animal.The more animals,the more stones or pebbles he had.他每放一个石头或者鹅卵石在一个袋子里就代表一个动物.动物越多他有的石头或者鹅卵石就越多.可知,在古代是以石头或者鹅卵石计数的,故选B.
58.B;计算题,根据题干,每个字母下面划三条线表示所拥有的东西,A和B两个字母表示他们相加,则表示有6个东西,故选B.
59.C;理解归纳题,根据原文It may explain why the word"calculate"comes from the Latin word"calculus"which means"stone".和The word"digit"comes form the Latin word"digitus".It means"fingers"!信息可知,calculus 和digit是拉丁文,故选C.
60.A;细节理解题,根据The number system we use today was invented by the Hindus in India thousands of the years ago可知现在使用的数字系统故事由几千年前印度的教徒发明的.信息可知答案选A
61.B;内容理解题,根据计数发展的过程,用石头或者鹅卵石---标签记录---用手指计算---十进制;故有四个阶段,选B.
点评 答题中注意带着问题阅读短文,一般就能顺利找出答题依据.对于不能直接找到根据的问题注意联系上下文,根据短文中心总结出正确答案.
| A. | have | B. | is | C. | are | D. | was |
Reporter:Hi,Andrew!I'm Nancy from Lives of the Very Famous magazine.(66)A.
Andrew:You're welcome.It's nice to meet you,Nancy.
Reporter:Our readers want to know what famous people do for vacation.(67)C.
Andrew:Well,I'm going to the south of Italy.
Reporter:What's the weather like there?
Andrew:It's beautiful…(68)D.
Reporter:Really?What are you doing there?
Andrew:Oh,going to the beach.Maybe playing volleyball.
Reporter:(69)B.
Andrew:Oh,yes,going sightseeing,going shopping,you know,the usual.
Reporter:And how long are you staying?
Andrew:(70)F.
Reporter:Well,that sounds wonderful!
| A.Thank you for talking to me today. B.Anything else? C.Where are you going for your next vacation? D.And it's always sunny and warm. E.How do you like Italy? F.For three weeks.G.When are you going there? |
| A.How are you going to do that? B.Everyone has his own dream. C.How often do you sing? D.What is it? E.By the way, F.How long have you been singing? G.I'm sorry, |
B:(26)D.
A:You have won the first prize in the singing competitioa Congratulations!
B:Really?That's so great!Thank you.
A:Then,being a good singer is your dream,isn't it?
B:Yes,of course.
A:(27)F.
B:Since I was 8years old I like singing very much.(28)E what's your dream?
A:My dream is to become a writer like Mark Twain.
B:That sounds great.(29)A.
A:I am going to write for our school magazine.
B:Good idea!Practice makes perfect!
A:(30)B I believe if we hold on to our dreams,they may just come true one day.
B:I agree,come on!
| A. | because | B. | so that | C. | but | D. | because of |