单项选择题

The idea of using HIV for a beneficial purpose has been widely accepted.（）

A．Right
B．Wrong
C．Not mentioned

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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
单项选择题
The fuel tanks had a capacity of 140 liters.（）

A．function
B．ability
C．volume
D．power
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