单项选择题

A．The underground oil resources have not been affected.
B．Most of the desert animals and plants have managed to survive.
C．The oil lakes soon dried up and stopped evaporating.
D．The underground water resources have not been polluted.
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单项选择题
A．Go to the computer center for assistance.B．Wait until 9:30 for a computer.C．Ask her professor for advice.D．Draw her own charts and graphs.
A．Go to the computer center for assistance.
B．Wait until 9:30 for a computer.
C．Ask her professor for advice.
D．Draw her own charts and graphs.
单项选择题
A．By bus.B．By bike.C．By taxi.D．On foot.
A．By bus.
B．By bike.
C．By taxi.
D．On foot.
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