单项选择题

A．To wear jackets to work.
B．Not to use air-conditioners.
C．To wear shirt sleeves.
D．To take all measures to conserve energy.
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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 temperatur
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
单项选择题
A．The language laboratory.B．Travel.C．Studying in high school.D．Going to movies and watching TV.
A．The language laboratory.
B．Travel.
C．Studying in high school.
D．Going to movies and watching TV.
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