未知题型
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.
未知题型 Which of the following is true of the reactions of authorities to the global warming?A．The government decides to rewrite the Kyoto Protocol.B．Parts of the U.S. will follow the federal government's advice.C．The U.S. has approved the new plan of gas emissions.D．Nine states in the U.S. will paddle their own canoe.