上学期Unit10UndertheVolcano课件
日期:2010-08-12 08:10
nitrogen(氮), etc
bits of rock and volcanic ash,sulphur(硫磺),Unit 10 Under the Volcano
volcano
/ erupt
gas
liquid
solid
Lava(熔岩)
vapour, carbon dioxide, etc
eruption
lava
Under the Volcano
What?
When?
Where?
Who?
The end?
True or f,
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