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《Culture Corner》最新PPT课件优质课下载
Printing （印刷术）
Paper-making（造纸术）
Gunpowder(火药)
the four great inventions of ancient China
What are the four new great inventions of China?
high-speed railway
E-payment
bike sharing
online shopping
Inventions
High-speed railway
Bike sharing
E-payment
Online shopping
Inventors
Time
A Japanese
In 1964
An European
In 1960s
An American
In 1990s
Michael Aldrich
In 1979
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