内容正文:
★ 教材原文
Numbers around the world
People around the world write numbers in different ways. The following shows how people from differentcultures write one to five.
Chinese: 一、二、三、四、五
Romans: Ⅰ, Ⅱ, Ⅲ, Ⅳ, Ⅴ
English: one, two, three, four, five
However, most people around the world use Arabic numbers (1, 2, 3, 4, 5, etc.) today.
世界各地的数
世界各地的人们书写数字的方式不同。下图显示了不同文化背景的人如何写从一到五。
中国:一,二,三,四,五
罗马:Ⅰ,Ⅱ,Ⅲ,Ⅳ,Ⅴ
英语:one, two, three, four, five
但是,今日世界上绝大多数人都在使用阿拉伯数字(1,2,3,4,5,等等)。
★巩固提升
回答问题 阅读短文,然后根据内容回答所提问题。
Everyone knows at least two languages—his or her own language and the international language of numbers.
Zero
Most of us use the system of numbers from 1 to 9 and (zero). With these, we can write any number. The Indians first invented and developed this system of numbers. Zero was a very important invention because it made it easier to write big numbers and to calculate.
Calculating machines
One of the first calculating machines was the abacus. People still use the abacus today.
A calculator