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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 Grammar focus 4a—4c下载详情
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造纸术

compass

指南针

printing

印刷术

gunpowder

火 药

*

potato chips

1850 1870

1853

When was it invented ?

*

light bulb

1879

When was it invented?

It was invented in 1879.

Who was it invented by ?

It was invented by Edison.

What’s it used for?

It’s used for seeing in the dark.

*

Car

1885

When was it invented?

Who was it invented by ?

What is it used for?

Benz.

It was invented in 1885.

It is used for traveling fast.

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