单项选择题

A．The effects of caffeine.
B．Some causes of headaches.
C．How to do well on exams.
D．Problems with the student cafeteria.
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填空题
It is suggested to provide opportunities for employees to express their ideas about ______.
单项选择题
A．The Tread Hall is on the left of a 20-storey building.B．The Tread Hall is on the right of a 20-storey building.C．The Tread Hall is behind a 20-storey building.D．The Tread Hall is next to a 20-storey building.
A．The Tread Hall is on the left of a 20-storey building.
B．The Tread Hall is on the right of a 20-storey building.
C．The Tread Hall is behind a 20-storey building.
D．The Tread Hall is next to a 20-storey building.
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