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environmental
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单项选择题
A．The opportunity is too rare to pass over.B．He should line up for the program as others do.C．He should concentrate on his studies.D．He should consider going together with others.
A．The opportunity is too rare to pass over.
B．He should line up for the program as others do.
C．He should concentrate on his studies.
D．He should consider going together with others.
单项选择题
A．The housekeeper.B．The bell captain.C．The information desk.D．The porter.
A．The housekeeper.
B．The bell captain.
C．The information desk.
D．The porter.
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