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根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两多余选项。 Is Dieting OK for Kids? You may know some adults and kids who worry about their weight and say they’re going on a diet. You might wonder if you should be on a diet , too.__ 1 __Why ? Let’s find out. Dieting to Lose Weight __ 2 __When someone diets to lose weight , the person is trying to eat fewer calories than the body consumes. By doing this , the person may lose body fat and decrease his or her weight. Likewise , if a person eats more calories than the body consumes , the person may gain weight. Kids usually do not need to diet in this way.__ 3 __ During this time , kids need a variety of healthy foods to keep their bodies growing properly. Some kids are overweight , but even overweight kids often can improve their health simply by eating nutritious foods and being more active. __ 4 __But kids may hurt their health even more by doing something drastic ( 极端的 ) , like skipping meals or deciding to eat only fruits. Who Needs to Diet? Though some people may feel they weigh too much or too little , there is no perfect body shape. Some people have larger frames and will always look bigger and heavier than people with smaller frames. __ 5 __Your doctor can examine you and check your body mass index( 身体质量指数 ) . That’s a way of estimating how much body fat you have. If the doctor is concerned about your weight , he or she can recommend a couple of goals : for you to gain weight at a slower pace for you to maintain your current weight For some kids , the doctor may recommend losing some weight , but this should be done with the doctor’s help. Kids who need to lose weight may visit( 闲谈 ) with a dietitian who can explain how to reduce calories safely while still getting all the necessary nutrients. A . It is important to form a good eating habit. B . All foods and many drinks contain calories. C . Being overweight can cause health problems. D . Not eating properly can be very harmful to kids. E . Unlike adults , kids are still growing and developing. F . Talk to your doctor if you have questions about your weight. G . But most kids do not need to—and should not—diet this way.
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【单选题】( )用于紧固组合夹具中的各种元件及压紧被加工件,所有螺纹均采用细牙螺纹。
A.
定位件
B.
压紧件
C.
紧固件
D.
组合件
【单选题】下列哪组激素未发现由非内分泌腺肿瘤分泌?( )
A.
降钙素和生长抑素
B.
ACTH和TSH
C.
类固醇激素及甲状腺素
D.
抗利尿激素病人绒毛膜促性腺激素
E.
生长激素释放激素和甲状旁腺素
【简答题】自底向上设计原理图,执行什么命令建立主电路和子电路之间的联系?
【判断题】电子产品的早期失效期,失效率高,且随时间延长而下降。
A.
正确
B.
错误
【判断题】水在宠物内的生理功用很复杂,生命过程中许多特殊生理作用都有赖于水的存在。 水的生理功能主要为: 1 .水是动物体的主要组成成分。 2 .水是动物体内重要的溶剂。 3 .水是各种生化反应的媒介 4 .水有润滑作用 5 .水参与体温调节
A.
正确
B.
错误
【单选题】下列哪组激素未发现由非内分泌腺肿瘤分泌( )
A.
降钙素和生长抑素
B.
ACTH和TSH
C.
类固醇激素及甲状腺素
D.
血管升压素和绒毛膜促性腺激素
E.
生长激素释放激素和甲状旁腺素
【判断题】纺织、钢铁、机械、服装等的生产一般属于多步骤生产。(    )
A.
正确
B.
错误
【单选题】进入工地料库的袋装水泥取样检验时,每批应从不少于( )袋中抽取。
A.
5
B.
10
C.
20
D.
30
【判断题】数据视图是用来录入、查看和修改数据的主操作界面。
A.
正确
B.
错误
【单选题】透光率为0.01,光学密度为
A.
10
B.
20
C.
2
D.
1
E.
3
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