单项选择题

A．By selling services that make life comfortable.
B．By selling land containing oil.
C．By selling public lands.
D．By selling coal and other natural products.
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单项选择题
A．The driver of the sports car.B．The two girls inside the car.C．The man standing nearby.D．The salesman from London.
A．The driver of the sports car.
B．The two girls inside the car.
C．The man standing nearby.
D．The salesman from London.
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