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  3. Thinner isn’t always better.A number of

Thinner isn’t always better.A number of

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问题 Thinner isn’t always better.A number of studies have 1_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_2_.For example,heavier women are less likely to develop calcium deficiency than thin women.3 among the elderly,being somewhat overweight is often an_4 of good health.Of even greater 5 is the fact that obesity turns out to be very difficult to define.It is often defined 6_body mass index,or BMI.BMI 7 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,8,can be divided into moderately obese,severely obese,and very severely obese.While such numerical standards seem 9,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,10 others with a low BMI may be in poor 11.For example,many collegiate and professional football players 12 as obese,though their percentage body fat is low.Conversely,someone with a small frame may have high body fat but a 13 BMI.Today we have a（an）_14_to label obesity as a disgrace.The overweight are sometimes_15_in the media with their faces covered.Stereotypes_16_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._17_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,_18_in health concerns,have stimulated a number of anti-obesity_19_.My own hospital system has banned sugary drinks from its facilities.Many employers have instituted weight loss and fitness initiatives.Michelle Obama launched a high-visibility campaign_20_childhood obesity,even claiming that it represents our greatest national security threat.19选？A.discussionsB.businessesC.policiesD.studies
选项 A.discussions
B.businesses
C.policies
D.studies
答案 D
解析 词义辨析【直击答案】解答此题需要联系空格后面紧跟着的句子。空后的句子出现了一系列表示同一个语义场的词汇，如hospital system，ban，many employers institute,指向的意思是一个系统中所出台的政策的问题。浏览四个选项，D项policies符合题意，直接入选。【命题思路】本题考查对上下文的语义的理解。【干扰排除】D项是强干扰项，代入原文与空格部分形成“对抗肥胖的研究”，但此含义与下文出现的语义场不吻合，因为“研究”一般多出自于机构，科研院所等层面的场所，医院更多是治病救人的地方。
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