单项选择题

A．70% of the land surface.
B．Food.
C．Drinking water directly.
D．Mineral water.
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单项选择题
A．It is more or less affected by the seasons,B．It stays the same in all seasons.C．It’ s a bit higher in summer than in winter.D．It varies from day to day,
A．It is more or less affected by the seasons,
B．It stays the same in all seasons.
C．It’ s a bit higher in summer than in winter.
D．It varies from day to day,
单项选择题
A．The woman often comes to see the man.B．Linda often takes care of the woman.C．The woman wants to help Linda.D．The woman is Linda’ s teacher.
A．The woman often comes to see the man.
B．Linda often takes care of the woman.
C．The woman wants to help Linda.
D．The woman is Linda’ s teacher.
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