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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—1c下载详情
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River

Clean water

But

...

grey sky

Water pollution

Have you seen these kinds of scenes?

Have you seen these kinds of scenes?

air pollution

Have you seen these kinds of scenes?

Factories pour harmful gases into the air.

noise pollution

land pollution

problems the earth is facing :

air pollution

noise pollution

water pollution

land pollution

So ...

what should we do to protect our earth-our only home?

雷霆赛事

(“眼”疾“手”快)

1

loud music

cars

rubbish

planes

littering

ships

factories

教材