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.

未知题型 Which of the following is true according to the last two paragraphs?A．Biographies have to be written in the form. of poems with notes.B．It's generally advisable to describe people's life in fewer words.C．Poem is the best way of depicting the wonderful life of Darwin.D．Darwin's life is filled with moments of sudden insights, as poems suggest.