单项选择题

A．116000.
B．300000.
C．360000.
D．1130000.
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单项选择题
A．To transport water to higher place.B．To transport vegetables quickly.C．To bring nutrients to the soil.D．To adjust the soil temperature.
A．To transport water to higher place.
B．To transport vegetables quickly.
C．To bring nutrients to the soil.
D．To adjust the soil temperature.
单项选择题
A．More than 12.B．12.C．100.D．Not mentioned.
A．More than 12.
B．12.
C．100.
D．Not mentioned.
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