单项选择题

A. They might eventually cause you to lose sleep.
C. You must not drink milk if you take them.
B. They help produce a neurotransmitter in the brain.
D. They make it unnecessary to take naps.
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单项选择题
A. Register for summer school. C. Remove personal property. B. Repair holes in room walls. D. Call the housing office.
A. Register for summer school. C. Remove personal property.
B. Repair holes in room walls. D. Call the housing office.
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