2013职称英语卫生必考30分.doc

阅读理解 第十六篇 Eat to Live A meager diet may give you health and long life, but it’s not much fun — and it might not even be necessary. We may be able to hang on to most of that youthful vigor even if we don’t start to diet until old age. Stephen Spindler and his colleagues from the University of California at Riverside have found that some of an elderly mouse’s liver genes can be made to behave as they did when the mouse was young simply by limiting its food for four weeks. The genetic rejuvenation won’t reverse other damage caused by time for the mouse, but could help its liver metabolize drugs or get rid of toxins. D 1. According to the passage, which of the following is NOT true? A Eating less than usual might make us live longer. B If we go on a diet when old, we may keep healthy. C Dieting might not be needed. D We have to begin dieting since childhood. B 2. Why does the author mention an elderly mouse in paragraph 2? A To describe the influence of old age on mice. B To illustrate the effect of meager food on mice. C To tell us how mice’s liver genes behave. D To inform us of the process of metabolizing drugs. D 3. What can be inferred about completely normally fed mice mentioned in the passage? A They will not experience free radical production. B They will experience more genetic rejuvenation in their lifetime. C They have more old liver genes to behave like young genes. D They are more likely to suffer from inflammation. A 4. According to the author, which of the following most interested the researchers? A The mice that started dieting in old age. B 27 of those 46 old genes that continued to behave like young genes. C Calorie restriction that works in people. D Dieting that makes sure a drug is effective. C 5. According to the last two paragraphs, Spindler believes that A calorie restriction is very important to young people. B seeing the effect of a diet, people will like to eat less than normal. C dieting is not a good method to give us health and