What can we infer from the third paragraph? A．The increase of price of first-class stamps may be greater than that of the second-class. B．The additional controls on the price may improve the efficiency in the long run. C．The greater commercial freedom may improve the quality of postal service. D．Ofcom is threatening the universal postal service in the long run.
A.The B. B．The C. C．The D. D．Ofcom E.
【参考答案】
B 段落推理题。[B]选项定位到第二句：Oneoftheoptionsistointroduceaddition......