首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
医学
Even as Americans have been gaining weight, they have cut their average fat intake from 36 to 34 percent of their total diets in
Even as Americans have been gaining weight, they have cut their average fat intake from 36 to 34 percent of their total diets in
admin
2013-12-14
25
问题
Even as Americans have been gaining weight, they have cut their average fat intake from 36 to 34 percent of their total diets in the past 15 years. And indeed, cutting fat to control or lose weight makes sense. Fat has nine calories per gram. Protein and carbohydrates have just four. Moreover, the body uses fewer calories to metabolize fat than it does to metabolize other foods. Compared with protein and carbohydrates—which break down into amino acids and simple sugars, respectively, and can be used to strengthen and energize the body— dietary fat is more easily converted to body fat. Therefore, it’s more likely to stay on buttocks, thighs and bellies.
But cutting fat from your diet doesn’t necessarily mean your body won’t store fat. For example, between nonfat and regular cookies, there’s trivial difference in calories because manufacturers make up for the loss of fat by adding sugar. Low-fat crackers, soups and dressings can also be just as high in calories as richer versions. No matter where the calories come from, overeating will still cause weight gain. The calories from fat just do it a little quicker. A Wisconsin computer programmer who decided with a diet coach to eat only 40 grams of fat a day learned the lesson firsthand. He wasn’t losing weight. Then he showed his food diary to his coach and revealed he’d been eating half a pound of jelly beans a day. "They don’t have any fat," he explains. But they had enough sugar to keep him from shedding an ounce.
Nonfat foods become add-on foods. When we add them to our diet, we actually increase the number of calories we eat per day and gain weight. That was borne out in a Pennsylvania State University study. For breakfast, Prof. Barbara Rolls gave two groups of women yogurt that contained exactly the same amount of calories. One group’s yogurt label said "high fat" — the other, "low fat." The "low fat" yogurt group ate significantly more calories later in the day than the other group. "People think they’ve saved fat and can indulge themselves later in the day with no adverse consequences," says Richard Mattes, a nutrition researcher at Purdue University. "But when they do that, they don’t compensate very precisely, and they often end up overdoing it."
Why Americans are still gaining weight?
选项
A、They eat too much fat.
B、They overeat.
C、They eat low-fat crackers, soups and dressings.
D、They eat sugar.
答案
B
解析
细节题。全文章主要论述美国人在过去的15年中虽然少吃含脂肪多的食物,但他们还在长胖。原因在于过量饮食会导致卡路里的过量的摄入而导致肥胖。其中第二段第四句No matterwhere the calories come from,overeating will still cause weight gain.(不管卡路里来自哪里,过量饮食仍会导致体重增加),因此选B。
转载请注明原文地址:https://www.kaotiyun.com/show/zaU3777K
本试题收录于:
医学博士外语题库考研分类
0
医学博士外语
考研
相关试题推荐
A.急性胰腺炎B.急性胆囊炎C.急性胆管炎D.急性梗阻性化脓性胆管炎Charcot三联征常见于
Justbeforedawnwereceivedacallthatanunresponsiveinfantwasbeingbroughtbyemergencymedicalservicestoourhospital.
A、Thereducedconsumptionofeggs.B、Thedevelopmentofsubstituteeggs.C、Theimprovedwaysofcookingeggs.D、Theremovalofn
Folkwisdomholdsthattheblindcanhearbetterthanpeoplewithsight.Scientistshaveanewreasontobelieveit.Researc
A、Thetreatmentiseasilyprepared.B、Thetreatmenthasworkedsuccessfullyinmanycountries.C、Itreducedbytwothirdsthenu
A、Nothangingtheposter.B、Peelingoffthewallpaper.C、Usingtapefortheposter.D、Nothidingthedamage.C从“Couldn’tyouuse
A、Arainwouldn’thelpmuch.B、Thereislittledoubtaboutit.C、Daveisafraidofplayingtennis.D、Werelievedthatday.A由文中“
A、Hewantstoknowhowtheconcertwas.B、Hedisagreeswiththewoman.C、Helikestoplaythepiano.D、Healsoenjoyedthemusic
Videogameplayersmaygetanunexpectedbenefitfromblowingawaybadguys—bettervision.Playing"action"videogamesimprov
A、Womenwhoareyoungandthin.B、Womenwholikedrinking.C、Womenwhogavebirthtochildintheirforties.D、Womenwhosegrand
随机试题
符合商品储存时间长,货物来自四面八方的特点的外贸仓库是()
膝关节平片检查不能显示
医学伦理学的三个特征是
决定和影响心室肌兴奋性的因素不包括
关于建设一经营一移交(BOT),公私合伙经营(PPP)、私人主动融资(PFI)和资产证券化(ABS)等融资模式中的各方责任比较的说法,正确的是()。
土地规划纲要中提出,要依据()原则,完善土地规划管理听证制度,明确违反规划处罚办法,增强土地规划执法力度。
按定额的适用范围分,定额可分为( )。
A、 B、 C、 D、 D每个图形中均有直角。
玛丽进去教室了。(复旦大学2014)
下列关于分时系统和实时系统的叙述中,哪一条是不正确的?
最新回复
(
0
)