单项选择题

A．It helps develop our personalities.
B．It enables us to acquire first-hand knowledge.
C．It makes our life more interesting.
D．It brings about changes in our lifestyle.
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单项选择题
A．To restore the normal production of the oil wells.B．To estimate the losses caused by the fires.C．To remove the oil left in the desert.D．To use the oil left in the oil lakes.
A．To restore the normal production of the oil wells.
B．To estimate the losses caused by the fires.
C．To remove the oil left in the desert.
D．To use the oil left in the oil lakes.
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.
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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