单项选择题

Conversation One

A. To encourage people to live in old house.
B. To build new buildings in poor area.
C. To allow several generation to live in separate houses.
D. To change old buildings into new ones.
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单项选择题
A. Sufficient sleep. B. A brisk walk. C. A cup of coffee. D. Good mood.
A. Sufficient sleep.
B. A brisk walk.
C. A cup of coffee.
D. Good mood.
单项选择题
A. It is an electrical water pump. B. It is a water pump that requires no external water supply. C. It is a water pump that requires almost no external energy. D. It is a water pump that requires only internal energy source.
A. It is an electrical water pump.
B. It is a water pump that requires no external water supply.
C. It is a water pump that requires almost no external energy.
D. It is a water pump that requires only internal energy source.
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