单项选择题

A．Greenhouse gases.
B．Over-exploitation of the beach.
C．Change of agricultural zones.
D．Change of climates.
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单项选择题
A．Having fun while in school.B．Working toward long-range goal.C．Being discouraged.D．Dropping a class that is dull and boring.
A．Having fun while in school.
B．Working toward long-range goal.
C．Being discouraged.
D．Dropping a class that is dull and boring.
单项选择题
A．One of her teachers recommended her to do it .B．One of her friends introduced it to her.C．She got it through a notice near the bus stop.D．She happened to meet a person who offered the job.
A．One of her teachers recommended her to do it .
B．One of her friends introduced it to her.
C．She got it through a notice near the bus stop.
D．She happened to meet a person who offered the job.
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