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师梦圆初中英语教材同步人教版九年级全一册Section A 1a—2d下载详情
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Do you know?

paper-making

造纸术

compass

指南针

printing

印刷术

gunpowder

火 药

The four great inventions

Printing, gunpowder, paper-making and the compass are the four great inventions of the ancient China. They were invented by Chinese. They still play an important part in the modern world.

The four great inventions

Inventions changed our world!

abacus

calculator

computer

bike

motorbike

car

plane

rocket

telephone

mobile phone

vision phone

Inventions changed our world!

candle

light bulb

TV

fridge

Do you know what these inventions are?

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