2006年湖北省高二英语下学期Unit13Thewaterplanet[整理六套]课件
日期：2010-08-26 08:24
Unit 13 The Water Planet
The Properties of Water
Questions for listening :
Oceans: ______﹪
Marian life:
_________species
99
5 million
Chemical structure
Water molecule’ structure:
Influence:
Two hydrogen atoms and one oxygen atom
1It can，
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