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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.
【C9】
选项 A、complicated
B、conservative
C、variable
D、straightforward
答案D
解析 本题考查形容词辨析。本形容词在句子中作表语，被修饰成分是主语such numerical standards，指的是上文提及的BMI指数。本句处于本段的段首，也是本段的总述句，处于总述句中的本形容词是对之后分述的概括和总结，其答案应该通过分述信息才能推导出来。之后的分述信息都是在描述BMI指数并不准确，是有问题的。根据这些线索综合判定本题的答案应该为选项D项straightforward(直截了当的，明确的)，即BMI指数(such numerical standards)看上去是明确的，实际上并非如此。其他选项例如A项complicated(复杂的)、B项conservative (保守的)、C项variable (可变的)均为无关选项，因为这三个选项所表达的意思在分述中没有对应的支持信息。
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