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

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

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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【C11】________. For example, many collegiate and professional football players【C12】________as obese, though their percentage body fat is low. Conversely, someone with a small frame may have high body fat but a【C13】________BMI.
    Today we have an【C14】________to label obesity as a disgrace. The overweight are sometimes【C15】________in the media with their faces covered. Stereotypes【C16】________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.【C17】________very young children tend to look down on the overweight, and teasing about body build has long been a problem in schools.
    Negative attitudes toward obesity,【C18】________in health concerns, have stimulated a number of anti-obesity【C19】________. My own hospital system has banned sugary drinks from its facilities. Many employers have instituted weight loss and fitness initiatives. Michelle Obama has launched a high-visibility campaign【C20】________childhood obesity, even claiming that it represents our greatest national security threat.
【C7】
选项 A、measures
B、determines
C、equals
D、modifies
答案C
解析 本题考查动词辨析。主语线索是BMI，宾语线索是body mass divided by the square of height(身体重量除以身高的平方)，再考虑到主语是一个定义肥胖的指数，本动词一定是在表达这个指数是如何得出来的意思。最佳答案是C项equals(等于)，即BMI指数等于身体重量除以身高的平方。其他选项无法构成符合逻辑意义的主语与宾语的搭配，如A项measures(测量)代入原文后意思为“BMI指数去测量身体重量除以身高的平方”，B项determines(确定)和D项modifies(修订)是同样的问题，即“BMI指数”无法对“身体重量除以身高的平方”作出 “确定”或“修订”动作。
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