未知题型 It is suggested in the last paragraph thatA．the government profited from the Climate Group's gas emission reduction.B．energy used more efficiently will bring benefits to economy as well as nature.C．energy bills should be slashed in order to maintain a low level of gas emission.D．the Climate Group is tackling the problem through accumulating strong evidence.

判断题 样本容量的降低可以提高假设检验的统计效力。()

未知题型 What does 'carbon sinks'(Line 1, Paragraph 2)mean?A．The process of producing greenhouse gas.B．The gradual process of land submersion.C．The absorbers of carbon dioxide.D．The process of forming carbonic compounds.