题目内容
16．People who are slightly overweight or mildly obese（肥胖的） have a lower risk of early death than normal weight individuals（个人；个体），according to a new analysis of nearly 100international studies．The studies，most conducted within the past decade，included about three million adults from around the world．The result of these studies by researchers at the National Center for Health Statistics in Maryland，part of the U．S．Centers for Disease Control and Prevention，shows that slightly overweight or obese people were six percent less likely to die from all causes compared to people of normal weight．But the researchers found that seriously obese individuals were still at a 30percent greater risk of death compared to healthy-weight individuals．
Study lead author Katherine Flegal says she was not surprised that overweight people would not have a higher death risk．"Because we'd actually already read a lot of this literature and realized that death rates for overweight would be at least not higher than normal[weight，"she said．"I guess l was a little bit surprised that it was definitely lower．And l was also surprised that the lower rates of obesity didn't seem to differ from normal weight．"But Flegal stresses the difference in death rates appear to be small between normal-weight people and overweight and mildly obese individuals．
The finding by Flegal and colleagues have raised new questions about the reliability（可靠性）of the so-called"body mass index"or BMI，a measurement of body fat as a ratio（比例，比率）of height to weight，that has become popular in recent years among public health experts to measure potential health risks．
But Heymsfield warns that individuals should not conclude that it's okay to put on extra kilograms，since being at a healthy weight lowers the risk for heart disease and diabetes．
13．Katherine Flegal feels surprised at the fact thatB．
A．obese people have higher death rates
B．slightly obese people have lower death rates
C．obese people tend to die early
D．death rates have nothing to do with body weight
14．What do we learn from the fifth paragraph？A
A．BMI may not be so reliable．
B．The study provides further evidence for BMI．
C．BMI tells nothing about potential health risks．
D．BMI has been much questioned recently．
15．What topic does the passage mainly deal with？C
A．Technology．
B．Dieting．
C．Health．
D．Death．
分析 一项新的医学研究发现，身体微胖的人夭折的可能性比正常体重的人还要低，这一结果令我们都很吃惊．那么人的体重和死亡以及健康有着什么样的联系呢？
解答 13．B 细节理解题．从文章shows that slightly overweight or obese people were six percent less likely to die from all causes compared to people of normal weight．可知，令Katherine Flegal感到吃惊的是，身体微胖的人夭折的可能性比正常体重的人还要低，故选B项．
14．A 推理判断题．分析文章第五段The finding by Flegal and colleagues have raised new questions about the reliability（可靠性）of the so-called"body mass index"or BMI，a measurement of body fat as a ratio（比例，比率）of height to weight，that has become popular in recent years among public health experts to measure potential health risks．可知，因为这个研究结果，人们对BMI的可靠性产生了怀疑，由此推断，BMI也许不完全可靠．
15．C 主旨大意题．综合全文内容可知，本文主要通过一项研究结果分析了体重与死亡率以及患病率之间的关系，故本文的主题应该是"健康"．
点评 阅读理解题测试考生在阅读基础上的逻辑推理能力，要求考生根据文章所述事件的逻辑关系，对未说明的趋势或结局作出合理的推断；或根据作者所阐述的观点理论，对文章未涉及的现象、事例给以解释．考生首先要仔细阅读短文，完整了解信息，准确把握作者观点．
