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  3. Thinner isn’t always better. A number of studies have concluded that normal-weight people are in fact at higher risk of some dis

Thinner isn’t always better. A number of studies have concluded that normal-weight people are in fact at higher risk of some dis

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问题     Thinner isn’t always better. A number of studies have concluded that normal-weight people are in fact at higher risk of some diseases compared to those who are overweight. And there are health conditions for which being overweight is actually【C1】________ . For example, heavier women are less likely to develop calcium deficiency than thin women;【C2】________ among the elderly, being somewhat overweight is often an indicator of good health.
    Of even greater【C3】________ is the fact that obesity turns out to be very difficult to define. It is often defined in terms of body mass index(体质指数), or BMI. An adult with a BMI of 18 to 25 is often considered to be【C4】________ weight. Between 25 and 30 is overweight. And over 30 is considered obese. Obesity, in turn, can be divided into【C5】________ obese, severely obese, and very severely obese.
    While such【C6】________ standards seem straightforward, they are not. Obesity is probably less a matter of weight than body fat. Some people with a high BMI are in fact extremely fit, while others with a low BMI may be in poor【C7】________ . For example, many collegiate and professional football players qualify as obese, though their percentage body fat is low. On the contrary, someone with a small frame may have high body fat but a normal BMI.
    Today we have a tendency to label obesity as a(n)【C8】________ . The overweight are sometimes pictured in the media with their faces covered. Stereotypes【C9】________  with obesity include laziness, lack of will power, and lower prospects for success. Teachers, employers, and health professionals have been shown to harbor biases against the obese. Even very young children tend to look down on the overweight, and【C10】________ about body build has long been a problem in schools.
    A. troublesome      B. protective        C. associated      D. therefore
    E. teasing          F. likewise          G. concern         H. impact
    I. normal           J. shape             K. complicated     L. numerical  
    M. compared         N. moderately        O. disgrace  
【C3】
选项
答案G
解析 词义辨析题。根据词性，此处应当填入名词。可选项有 “concern(顾虑，问题)，impact(影响)，shape(形状，身材)，disgrace(耻辱，丢脸)”。根据the fact that这个同位语从句，我们可以找到线索obesity tums out to be very difficult to define“肥胖症这一概念非常难以界定”，这才是更大的问题，符合题意的是concern。
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