单项选择题

A．To transport water to high places.
B．To provide air conditioning.
C．To fertilize the soil.
D．To adjust the soil temperature.
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单项选择题
A．Because they always win in the Olympic Games.B．Because they base their education on sports.C．Because they have many sports stars.D．Because they learn and play sports a lot.
A．Because they always win in the Olympic Games.
B．Because they base their education on sports.
C．Because they have many sports stars.
D．Because they learn and play sports a lot.
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