What makes the U. S. fight the charges against a beloved superstar?
A．Their love for the international athletic glory.
B．Their own ranks.
C．America's credit.
D．The spirit of fair play.

未分类题The attitude of the author toward the new service is

未分类题What are the ideal conditions for creating clouds?A．The temperature is as low as minus 235 degrees Fahrenheit.B．The air is a million times drier than that of Sahara.C．Extremely dry air and low enough temperature.D．A mild climate and the build-up of carbon dioxide.

未分类题Which of the following statements is true?A．In the upper atmosphere, carbon dioxide acts as a thick, heat-trapping blanket.B．It is the build-up of CO2 that causes climate change and heats up Earth's surface.C．Yearly emissions of carbon dioxide levels have grown about 20 percent since 1980.D．The build-up of carbon dioxide leads to the surge of night-shining clouds.

未分类题John Dewey indicates that the thoughts and ideas of an individual areA．determined by the environment around him.B．minimal compared with the power of tradition.C．more closely related to his family than the society.D．often completely unintelligible.

未分类题The experts in aviation industry disapproved the claim by the CCR becauseA．the calculation of aviation industry's carbon emission is based on prediction instead of facts.B．the figure calculated is much more than the experts in aviation industry expected.C．airlines are also making great efforts to reduce their oil consumption and carbon emissions.D．the experts didn't agree with the way of their calculation of the carbon emissions by planes.