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师梦圆高中英语教材同步北师大版选修8Lesson 3 Natural Disasters下载详情
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北师大2003课标版《Lesson 3 Natural Disasters》公开课PPT课件优质课下载

typhoon

hurricane

volcanic eruption

tsunami(海啸)

landslide (山崩)

Caused by people

natural

Made worse by people

forest fires

hurricanes

droughts, earthquak, floods,

landslides, tsunamis, hurricanes,

typhoon, volcanic eruptions,

forest fires, hurricanes

What caused those disasters? Which are caused by nature? Which are caused by people?

Some natural disasters have become common.

Volcanic eruptions& earthquakes have always been a threat to our world.

Causes of natural disasters.

Volcanoes and earthquakes are even more dangerous than in the past.

Experts predict that natural disasters will get worse.

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