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Module 9 Great inventions
Unit2 Will books be replaced by the Internet?
What do you know ?
printing
compass
papermaking
gunpowder
Four great inventions of ancient China
direction
What do you know ?
Great inventions
......
What do you know ?
advantages
● easy to read and see
● convenient (方便的) to carry
● cheap to buy
● …
● get information quickly
● watch films/ listen to music
● shop online