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.（）
单项选择题 Our statistics show that we consume all that we are capable of producing.（）
单项选择题 It is no use debating the relative merits of this policy（）
