2. 考研
  3. Thinner isn’ t always better. A number of studies have【C1】________that normal-weight people are in fact at higher risk of some d

Thinner isn’ t always better. A number of studies have【C1】________that normal-weight people are in fact at higher risk of some d

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问题     Thinner isn’ t always better. A number of studies have【C1】________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 【C2】________For example,   heavier women are less likely to develop calcium deficiency than thin women.【C3】________among the elderly, being somewhat overweight is often an【C4】________of good health.
    Of even greater【C5】________ is the fact that obesity turns out to be very difficult to define.   It is often defined【C6】________body mass index, or BMI. BMI【C7】________ body mass divided by the square of height. An adult with a BMI of 18 to 25 is often considered to be normal weight. Between 25 and 30 is overweight. And over 30 is considered obese. Obesity,【C8】________, can be divided into moderately obese, severely obese, and very severely obese.
    While such numerical standards seem【C9】________, 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,【C10】________ others with a low BMI may be in poor shape. For example, many collegiate and professional football players qualify as obese, though their percentage body fat is low. Conversely, someone with a small frame may have high body fat but a normal BMI.
【C2】
选项 A、protective
B、dangerous
C、sufficient
D、troublesome
答案A
解析 本句句意是：对于某种健康情况，超重事实上是有________。根据前文的结论，超重能减少患疾病的风险，说明超重在一定情况下具有保护作用，故选A。
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