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1. Calorie restriction, a diet high in nutrients but low in calories, is known to prolong the life of rats and mice by preventing heart disease, cancer, diabetes, and other diseases. A six-month study of 48 moderately overweight people, who each reduced their calorie intake by at least 25 percent, demonstrated decreases in insulin levels and body temperature, with the greatest decrease observed in individuals with the greatest percentage change in their calorie intake. Low insulin level and body temperature are both considered signs of longevity, partly because an earlier study by other researchers found both traits in long-lived people. If the above statements are true, they support which of the following inferences? A Calorie restriction produces similar results in humans as it does in rats and mice. B Humans who reduce their calorie intake by at least 25 percent on a long-term basis will live longer than they would have had they not done so. C Calorie intake is directly correlated to insulin level in moderately overweight individuals. D Individuals with low insulin levels are healthier than individuals with high insulin levels. E Some individuals in the study reduced their calorie intake by more than 25 percent.
2.Last January, in an attempt to lower the number of traffic fatalities, the state legislature passed its “Click It or Ticket” law. Under the new law, motorists can be pulled over and ticketed for not wearing their seat belts, even if an additional driving infraction has not been committed. Lawyers and citizens’ groups are already protesting the law, saying it unfairly infringes on the rights of the state’s drivers. Law enforcement groups counter these claims by stating that the new regulations will save countless additional lives. Which of the following inferences is best supported by the passage above? A Prior to the “Click It or Ticket” law, motorists could not be stopped simply for not wearing a seat belt. B The “Click It or Ticket” law violates current search and seizure laws. C Laws similar to “Click It or Ticket” have effectively reduced traffic fatalities in a number of states. D The previous seatbelt laws were ineffective in saving lives. E Law enforcement groups, rather than citizens groups, should determine how to best ensure the safety of motorists.
参考答案： EA
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发表于 2021-6-1 09:16:47
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