单项选择题

FDA has approved the plan of using HIV to cure cancer in humans.（）

A．Right
B．Wrong
C．Not mentioned

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单项选择题

The fuel tanks had a capacity of 140 liters.（）

A．function
B．ability
C．volume
D．power

单项选择题

Our statistics show that we consume all that we are capable of producing.（）

A．waste
B．buy
C．sell
D．use

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