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.
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单项选择题
A．Patient and doctor.B．Judge and lawyer.C．Student and teacher.D．Client and lawyer.
A．Patient and doctor.
B．Judge and lawyer.
C．Student and teacher.
D．Client and lawyer.
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.
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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