单项选择题

A. It helps to have a good sleep.
B. It helps to strengthen the bones.
C. It helps to supply enough blood to head.
D. It helps to exercise muscles in the body.
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单项选择题
A. When they first arrive at a prison. B. When they are leaving the prison. C. When they behave themselves. D. When they break the rules.
A. When they first arrive at a prison. B. When they are leaving the prison.
C. When they behave themselves. D. When they break the rules.
单项选择题
A. He thinks he has a natural gift for the headstand. B. He thinks the headstand is a splendid exercise. C. He practiced the headstand all day long yesterday. D. He couldn’t stand on his head alone yesterday.
A. He thinks he has a natural gift for the headstand.
B. He thinks the headstand is a splendid exercise.
C. He practiced the headstand all day long yesterday.
D. He couldn’t stand on his head alone yesterday.
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