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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.
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A．Begging food from the tourists.B．Attacking the tourists.C．Dropping wastes on the tourists.D．Making loud noise to disturb the tourists.
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A．New Fashion in Thailand.B．How to Use Air-conditioner wisely.C．A New Way to Save Energy.D．Air-conditioner in Thailand.
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