Passage Three
According to the best historical and archaeological evidence, it is estimated that it took about 800 thousand to 1 million years for the earth's population to reach the 250 total which existed at the end of the first century 'after Christ. For some time after that, disease, famine, and war kept the population increase down to a fraction of 1 percent a year so that more than 15 centuries passed before the population reached 500 million. But in the next 250 years, up to 1850, the population of the world shot up to the 1 billion mark, and today it has reached 3 billion. It is predicted by United Nations investigators that in the next 35 years the population of the world will double. When experts are asked what the most effective measure which overpopulation poses, they reply that at least three measur A. estimates based on current population growth B. references in literature and mythology C. estimates based on previous population growth D. written records and cultural remains [单项选择]Passage 3
[单项选择]According to the following passage, which of the following statements is true of international comparisons of overall fat intake
A. They provide a reasonable indicator of the health benefits of polyunsaturated fats. B. They tend to conflate too many factors to provide an effective argument against reducing overall fat intake. C. They are rife with subtleties too complex for most nutritionists to be able to understand properly. D. They correctly tend to indicate the necessity for reducing overall fat intake reduction in affluent societies. E. They tend to lend too much attention to non-dietary causes of coronary heart disease. [单项选择]According to the passage, why haven’t scientists found a cure for the common cold()
A. They haven’t devoted as much energy to medicine as to space travel. B. There are too many kinds of cold viruses for them to identify. C. It is not economical to find a cure for each type of cold. D. They believe people can recover without treatment. [填空题]According the passage, to build paradise needs ______.
[单项选择]What is true according to the passage
A. She could see and hear again. B. She became a writer and wrote a lot of books. C. She painted many drawings. 我来回答: 提交
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