2010年1月19日，贵州某媒体报道称，贵州省卫生厅近日发布三聚氰胺超标食品“黑名单”，确定四个批次的食品存在三聚氰胺超标问题。市场上发生假冒伪劣、以次充好的事情，市场秩序混乱、坑蒙拐骗盛行，此类事件屡禁不止，人们对国产食品的信心再度降低。这给社会主义市场经济发展的警示是（ ）
A．要禁止各种形式的地方保护和其他非法竞争
B．要遵循自愿、平等和公平的交易原则
C．建立和完善社会信用制度是规范市场秩序的治本之策
D．有了社会信用制度，市场秩序就一定能规范
答案：C
本题考查学生对规范市场经济秩序的理解。社会主义市场经济发展的根本出路，A、B不选，D项说法有错误，整顿市场秩序的根本途径在于社会信用制度。
In the United States, 30 percent of the people have a “weight problem”。To many people the cause is obvious (明显的): they eat too much. But scientific evidence (证据) does little to support this idea. Going back to America of 1910, we find that people were thinner than today, yet they ate more food. In those days people worked harder physically, walked more, used machines much less, and didn’t watch television. Several modern studies, moreover, have shown that fatter people don’t eat more on average than thinner people. A 1979 study of 3,545 London office workers showed that fat people eat less than slim (苗条的) people. Studies also show that slim people are more active than fat people. A study by a research group at Stanford University found the following interesting facts: The more the man ran, the greater loss of the body fat The more they ran, the greater increase in food intake. Thus, those who ran the most ate the most, yet lost the greatest amount of body fat. 小题1: Nowadays many Americans have the problem that ______.
 ing to the passage, how many people in 900 Americans have a “weight problem”?
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