单项选择题

A．In the doctor’s office.
B．In the living room.
C．In the classroom.
D．In the conference room.
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填空题
The emphasis of this advertisement is on______.
单项选择题
A．Living things.B．Living things and nonliving things.C．The environmental problems caused by industry and people.D．The interrelationship of living things to their environment.
A．Living things.
B．Living things and nonliving things.
C．The environmental problems caused by industry and people.
D．The interrelationship of living things to their environment.
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