深圳牛津7AChapter4Reading.ppt

1 ancient: many many years ago (a)
2 consists of: includes (b)
3 invented: made for the first time (b)
4 accurate: without mistakes (a)
5 stand for: mean (a)
C1 Find these words in the article on page 45. Read the words around them and choose the best meanings.
A B
1 international a became bigger or stronger
2 developed b but
3 however c said numbers one after the
other
4 bottom d more than one country
5 counted e in the lowest place
6 figure f a number between 0 and 9
C2 Find the words in Column A in the article and match them with the meanings in Column B.
1 A calculating machine using wires and heads.
An ___________
2 A small machine using electronic power to do calculations.
A ___________
3 A very powerful machine for doing calculations.
A__________
C3 What do the following descriptions refer to? Write down the correct names in the blanks.
calculator
computer
abacus
Match the words with the pictures, signs and numbers.
d
e
f
g
h
i
j
k
l
1 a decimal
number
4 zero
11 a pair of
even numbers
8 divide
5 add, plus
6 subtract; minus
7 multiply, times
12 equals
9 a number
showing degrees
10 a percentage
2 a pair of
odd numbers
3 a fraction
B. Before you read the article on the next page, look at its title, the headings and the pictures. What does the article tell you? Tick the things on the list below.
heading
title , 名称, 标题,
√打勾
( ) 1. Long ago, there were different
ways of writing numbers.
( ) 2. The Egyptians first invented the 1
to 9 system of numbers.
( ) 3. The zero is not a number.
( ) 4. The zero is an especially
important number.
√
√
Indian
( ) 5. Machines make it easier for
us to calculate.
( ) 6. Your brain is an important
part of your body.
√
使某人更容易做某事
至少
在古代
以很多不同的方式
以十为单位计数
数字系统
由。。。构成
帮助人们做某事
又快又准确
代表
电子计算器
平方根
做运算
一瞬间
1. at least
2. in ancient times
3. in many different ways
4. count in tens
5. the system of numbers
6. consist of
7. help people do/to do sth.
8. fast and accu