Burning fuel with a high sulfur content in a diesel engine will （）

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  A.increase thermal efficiency B.cause clogging of the fuel system C.increase the ability of the engine to start in cold weather D.produce corrosion in the cylinder and exhaust system at low loads

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• 听力原文：America’s universities are the envy of the world with 60% of all U.S. high school听力原文：America’s universities are the envy of the world with 60% of all U.S. high school graduates attending college, while in Germany, it’s 30% in France, 28% and in Britain, only 20%. （）

  A．Thirty percent of the German population can receive college education． B．American students enjoy a very high rate of admission to college in the worlD C．Comparatively speaking, there are more British people than the French attending collE D．American college students are envied by 60% of high school graduates around the worl D．

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