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
外语
1 The three energy-yielding food nutrients are carbohydrates, proteins, and fats. The amount of energy a food provides depends o
1 The three energy-yielding food nutrients are carbohydrates, proteins, and fats. The amount of energy a food provides depends o
admin
2019-07-01
61
问题
1 The three energy-yielding food nutrients are carbohydrates, proteins, and fats. The amount of energy a food provides depends on how much of each nutrient it contains. When broken down in the body, a gram of carbohydrate and a gram of protein each yield about four kilocalories of energy. A gram of fat yields nine kilocalories; therefore, fat has a greater energy density than either protein or carbohydrates. Foods with a high energy density provide more kilocalories per gram than foods with a low energy density.
2 Different meals may deliver the same number of kilocalories but varying amounts of food energy. For example, a 450-gram breakfast of cereal, milk, fruit, egg, turkey sausage, toast, and jam and a 150-gram breakfast of doughnuts both deliver 500 kilocalories. However, the first breakfast, which is higher in protein, has a lower energy density than the doughnuts and supplies three times as much food energy.
3 During a meal, as food enters the digestive tract, hunger decreases and the body reaches satiation, the signal to stop eating. The nutrient composition of a meal affects the level of satiation the meal provides. Foods low in energy density are more satiating than foods high in energy density. Of the three energy-yielding nutrients, protein is the most satiating and fat is the least satiating. High-fat foods are flavorful, which encourages people to eat more, but they are also energy-dense and deliver more kilocalories per bite. Therefore, eating meals high in fat may lead to overconsumption.
The passage supports which of the following statements about food nutrition?
选项
A、The nutrients in food determine its energy yield and level of satiation.
B、All foods with the same number of kilocalories are equally nutritious.
C、The most nutritious foods are those that are high in energy density.
D、Too many protein-rich foods will lead to overeating and weight gain.
答案
A
解析
The passage supports the statement that the nutrients in food determine its energy yield and level of satiation. In fact, these are major ideas in the passage. Clues: The amount of energy a food provides depends on how much of each nutrient it contains; The nutrient composition of a meal affects the level of satiation the meal provides.
转载请注明原文地址:https://kaotiyun.com/show/CafO777K
0
托福(TOEFL)
相关试题推荐
Completetheformbelow.WriteNOMORETHANTWOWORDSAND/ORANUMBERforeachanswer.RegistrationFormExampleAnswerTypeof
Listenandchoosethecorrectanswer.Thesurveyfoundthatthemajorityofemployeesdrink
BeforeyoulistenLookatthetaskbelow.Trytoworkoutthesituationfromthetask.Whataretheytalkingabout?Whyarethey
WhichTWOcoursesdoesthesummerschooloffer?ApreparationcoursesforgraduatestudiesBteachertrainningCfutureemplo
ResearchingtheoriginofmedievalmanuscriptsBackgroundMedievalmanuscripts—handwrittenbooksproducedbetweenthefifth
TheDinee,aNativeAmerican(people)ofthesouthwesternUnitedStates,were(once)seminomadichunterswho(practiced)a(few)
NarratorListentothelectureinbusinessclassWhichoffollowingaretwokeyreasonsforNick’ssuccess?Clickontwoa
"PaleolithicArt"→Theseveralmillenniafollowing30,000B.C.sawapowerfuloutburstofartisticcreativity.Theartworks
"PaleolithicArt"→Theseveralmillenniafollowing30,000B.C.sawapowerfuloutburstofartisticcreativity.Theartworks
随机试题
现阶段公有制占主体地位的决定因素是【】
正常结合上皮的冠根向长度约为
患者,男,85岁,脑出血,病情危重。护理该患者时,不正确的方法是
根据我国土地管理法的有关规定,征用耕地的补偿费用包括土地补偿费、安置补助费以及地上附着物和青苗的补偿费,其中,每公顷被征用土地的安置补助费最高不得超过被征用前3年平均年产值的()倍。
危险废物安全填埋处置适用于()的危险废物
基金管理人()是指基金管理人在信息披露过程中,违反相关法律法规和公司规章,对基金投资者形成了误导或对基金行业造成了不良声誉,受到处罚和声誉损失的风险。
某小型工业企业为增值税小规模纳税人。2007年3月取得销售收入8.48万元(含增值税);购进原材料一批,支付货款2.12万元(含增值税)。已知该企业适用的增值税征收率为6%,该企业当月应缴纳的增值税税额为( )万元。
下列对班级授课制的认识,不正确的是()。
Notuntiltheearlyyearsofthel9thcentury______whatheatis.
SanFranciscoisanexcitingandbeautifulcityintheUSA.Itrisesonthepeninsula(半岛)betweenthePacificOceanandtheSan
最新回复
(
0
)