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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 B 3a—3b Self check下载详情
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It was invented in 1876.

It was invented by Bell.

It is used for calling someone.

telephone

It was invented in 1971.

It is made of plastic.

It is used for studying or playing games.

computer

A:when was …… invented ?

B:It was invented in……

A:who was it invented by? B:It was invented by…

A:what is it used for ?

B:It is used for ……

1927

John Baird

watching programs

1885

Carl Benz

driving

1971

studying or playing games

1876

Bell

calling someone

How did they think of that ?

crayon holders

earmuffs

wristies

popsicles

1.When were popsicles invented?

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