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 temperatur
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单项选择题
A．Driving a car.B．Taking a taxi.C．Going by train.D．Taking the subway.
A．Driving a car.
B．Taking a taxi.
C．Going by train.
D．Taking the subway.
单项选择题
A．To wear jackets to work.B．Nut to use air-conditioners.C．To wear shirt sleeves.D．To take all measures to conserve energy.
A．To wear jackets to work.
B．Nut to use air-conditioners.
C．To wear shirt sleeves.
D．To take all measures to conserve energy.
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