大学英语六级-84及答案解析.doc
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1、大学英语六级-84 及答案解析(总分:618.00,做题时间:90 分钟)一、BPart Writing(总题数:1,分数:106.00)1.1. 新闻媒体披露,徐州某中学 1000多名学生签名,庄严承诺“远离网吧” 2分析“远离网吧”运动的原因 3做出对比和评论 BA way from Net-bar Campaign/B(分数:106.00)_二、BPart Reading (总题数:1,分数:10.00)BFat/BAdult fat rates have almost quadrupled in the last 25 years. Not 22% of Britons are fat
2、 and three-quarters are overweight. The number of fat tripled in 20 years. 10% of six year olds are fat, rising to 17% of 15 year olds. Becoming fat can lead to health problems, including arthritis, heart disease and diabetes; BWhat is Fat?/BYour “body mass index“ or BMI is a measure of, body fat ba
3、sed on height and weight.A BMI of:Under 20 = underweight20 - 25 = normal25 - 30 = overweight30 + = fatSo, according to the formula, people are classed as fat if they have a body mass index over 30. They are overweight if it is 25 - 30.BReasons to Get Fat/BFat functions as energy reservoir. It is 1ai
4、d down when food is plentiful and then converted back to energy when needed. Normal levels of fat are not a problem for the body. In fact, theyre necessary for it to function smoothly.On a basic level, people become fat when their caloric intake is higher than their calorie expenditure. However, a h
5、ost of factors complicate this picture. An individuals genetics, metabolism, culture and lifestyle all have a role to play.BWhere is Fat Stored in the Body?/BMost fat is stored under the skin. But there is also some on top of your kidneys and inside your liver and muscles. Other body parts that gath
6、er fat depend on your gender: adult men: chest, waist adult women: breasts, waist and hipsFat tissue is made up of fat cells. These are like tiny plastic bags that hold droplets of fat. Fat cells are only formed in our childhood. They start growing while we are in our mothers pregnancy. The next sta
7、ge of generation is during puberty (青春期), when the sex hormones are triggered. It defines the areas in which the fat cells grow. The amount of fat the body wants to store is thought to be proportional to the total number of fat cells.After puberty, we do not grow any more fat cells. Our ceils just e
8、xpand or shrink to accommodate the fat inside our bodies.BThe problem with Childhood Fat/BIf a child becomes fat their body processes can change. Some of these may Be difficult or even impossible to alter in adulthood.Fat ceils are laid down in the first few years of life. If fat is stored quickly,
9、more fat cells are created. So a fat child can have up to three times as many as a normal child. Eventually, fat cells stop multiplying and an adult has a fixed number for the rest of their life. The existing cells simply enlarge or shrink to accommodate more fat.Health problems for kids Few health
10、problems are observed in obsess children. But they may develop conditions that cause problems later in life, such as high blood pressure.They may also suffer from “sleep apnoea (呼吸暂停)“. When this happens, soft tissue in the throat blocks the airways during sleep. This can stop their breathing for up
11、 to a minute. This process can happen hundreds of times a night, leading to heart disease, memory problems, headaches and fatigue.Diabetes risk Some fat children may develop type diabetes. Normally this condition only starts much later in life. When it strikes, the body stops being able to process s
12、ugar properly and the cells are starved of energy. Type diabetes cannot be cured, but it can be treated. It may lead to complications such as nerve damage, heart disease, kidney disease and blindness. Children with this condition will have to live with it all their lives, increasing the chance of co
13、mplications.BWhat Treatments Are Available?/BNew drugs Current weigh-loss drugs are mainly amphetamine (安非他明,一种药品) based. They increase the amount of some hormones in the blood, lowering hunger levels. However, they are not suitable for long term use and side effects can include high blood pressure,
14、 anxiety and restlessness. New drugs are being developed that may give greater weight loss with fewer side effects.Lifestyle changes New drugs may help people to lose weight, but the problem is keeping it off. Most people who lose weight on a calorie controlled diet put it on again. Only 5% of fat p
15、eople manage to keep their weight down. What is required is a complete change in lifestyle. More exercise, a healthier balanced diet and realistic expectations can help make the change permanent. To become healthier doesnt require huge weight loss.BAdvice on Childhood Fat/BProfessor Jane Wardle, an
16、expert on childhood fat, gives her advice-on helping children lose weight.(1) Should kids ever be made of finish whats on their plate? Dont force children to eat more when they say they are full otherwise they could lose their ability to naturally regulate what they eat. Before serving up a second p
17、ortion, wait a few minutes. It takes some time for the messages that tell us we have had enough to eat to reach the brain.(2) Can giving kids food as a reward cause fat? Using food as a reward is never a good idea because your child will learn to value certain “treat“ foods and may turn to food for
18、comfort. Use non-food rewards instead they dont need to be large material rewards. One of the best motivators is praise!(3) Is it worth forbidding fattening foods? Forbidding certain foods can make them seem more attractive. Teach your child about the health value of foods, particularly those that a
19、re rich in vitamins and nutrients. Make your home a healthy food zone. Fill up the fruit bowl instead of buying biscuits and crisps. Your child is likely to model themselves on your behavior, so choose healthy food options whenever possible.(4) Should I offer my child a choice of food? Research has
20、shown that when there is more choice available we tend to eat more. Even the sight or smell of tempting food can override the bodys natural mechanism of regulation so we eat when were not hungry. You might want to offer your child a choice, but keep the options to a minimum.(5) At what age should ki
21、ds be treated for fat? Parents of even young children can make sure the family changes to a healthy lifestyle rather than targeting weight loss specifically. Children grow at different rates and many overweight children will “grow out of it“ as they grow taller. Few treatments are targeted at childr
22、en under the age of seven years. From age 8 to 10, a child who is fat should have a medical evaluation to assess the severity of the problem. The older your child is, the less likely they are to grow out of it. A 15-year-old who is over-weight is likely to remain so in adulthood.(分数:10.00)(1).“body
23、mass index“ or BMI can be used to indicate if you are overweight, obese, underweight or normal.(分数:1.00)填空项 1:_(2).According to the passage, calorie intake is the most important reason leading people to becoming fat.(分数:1.00)填空项 1:_(3).Body parts that gather fat are completely different in male and
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- 大学 英语六级 84 答案 解析 DOC
