For most of us,dieting is a frustrating fact of life.With so much conflicting nutritional information about,it can be difficult to tell which weight-loss strategies really work.Let's start by discounting these confusing myths.
　　1.All calories are created equal
　　What you eat,not how much,is the main factor behind weight gain,according to research.Calories from fat pack on the pounds.The reason:during digestion,the body burns many more calories metabolizing protein and carbohydrates than it does metabolizing fat.
　　2.Desserts are taboo
　　Cakes,pies and ice cream can sensibly be worked into a diet,the expert says.Moderation is the key.CVt down on other meals if you'll be eating out at a restaurant known for its rich sweets.Or indulge,but take only a few bites.
　　3.Fast foods are forbidden
　　A plain hamburger on a bun is still a healthful choice.So is grilled chicken or a green salad with low-cal dressing.But watch out for French fries,milkshakes and batter-dipped chicken or fish.
　　4.Fasting is the fastest diet
　　Some studies suggest that drastically reducing calorie intake switches the body into a"starvation mode",which conserves calories and decreases your metabolic rate.The more frequently you deprive yourself of food,the better your body may get at storing calories.So,in the long run,repeated fasting may actually undermine your weight-loss efforts.
　　5.To keep weight off,simply watch what you eat.
　　According to experts,exercise combined with dieting ensures weight Joss better than dieting alone does.Experts also agree that sticking with regular,moderate exercise is more important that occasional vigorous workouts are.Obesity-researcher Kelly Brownell encourages patients to make a series of small physical efforts:taking the stairs instead of the elevator and parking the car far from where you are going and walking.
　　Most important,before getting caught up in dietary myths,let good sense shape your eating habits.Your body will thank you for it.
　　1、The word"shape"in the last sentence means _____.
　　A.break
　　B.form
　　C.get rid of
　　D.change
　　参考答案：B
　　参考解析：本题考查对词汇的掌握，shape做动词对有“便成形”的意思，故选B.
　　2、It cannot be inferred from the first paragraph that _____.
　　A.the information about dieting is always-contradictory
　　B.there are too many weight-loss strategies to choose from
　　C.dieting is always troublesome to most people
　　D.people should not believe the ideas of dieting
　　参考答案：D
　　参考解析：本题是推理题，因A、B、C项均可以从文中推出，D则不能。故选D.
　　3、One of the elements to gain weight is _____.
　　A.the amount of the food you eat
　　B.over sleeping
　　C.laziness
　　D.the kind of food you eat
　　参考答案：D
　　参考解析：本题是细节推理题，从对第—个谜团的破解中可推知答案。
　　4、The phrase"starvation mode"means _____.
　　A.being very hungry
　　B.eating what you like when you are hungry
　　C.weight-loss efforts
　　D.being ready to eat
　　参考答案：A
　　参考解析：本题考查对词汇的掌握。starvation mode意为“饥饿状态，”故选A.
　　5、Which of the following saying is true about dieting?
　　A.You can't eat sweets.
　　B.Fast foods are not good.
　　C.You should not neglect any meals.
　　D.Fasting is always helpful
　　参考答案：C
　　参考解析：本题是推理判断题，考查对全文的整体把握。可用排除法，因A、B、D项均不对，故选C.
　　参考译文
　　对大多数人来说，节食是人生中一件烦人的事情。由于众多有关营养方面的信息相互矛盾，要讲出哪一种减肥措施真正奏效不是件容易的事。先让我们从解开这些扰人的谜团开始。
　　1.所有食物产生的热量都是一样的。
　　吃什么而不是吃多少是长胖的主要原因。来自脂肪的热量（卡路里）使体重增加。原因是：在消化过程中，身体对蛋白质和碳水化合物的代谢比对脂肪的代谢要消耗更多的热量。
　　2.餐后甜食是大忌。
　　蛋糕、馅饼和冰淇淋可以合理地加进日常饮食。关键在于适度。如果你要去一家以甜食著称的饭店吃饭，那么你要在其他几顿饭上少吃点。或者不加节制，但只能吃几小块。
　　3.禁用快餐食品。
　　面包夹一块纯精牛肉是有益健康的可供选择的食品。同样可以选择烤鸡或拌有低卡调料的绿色色拉。但是要小心法式油炸土豆条，奶昔和粘有用鸡蛋和牛奶调制成的面糊的鸡肉或鱼肉。
　　4.禁食是最见效的减肥法。
　　一些研究表明：迅猛地减少卡路里的摄入量可使你的身体处于一种“饥饿状态”，这既保存了卡路里又使你的新陈代谢速度减慢。你越不让自己吃东西，你的身体就越会储存热量。因此，从长远来看，反复禁食也许实际上是在破坏你减肥努力的成果。
　　5.要减肥只需注重你的饮食。
　　根据专家的看法，锻炼结合节食比单独注重节食更能做到减肥。专家们也同意坚持经常而又适度的锻炼比偶尔做些大运动量的锻炼更重要。肥胖病研究者K鼓励病人做一系列少量的身体活动：以爬楼梯代替坐电梯；把车停得尽量远一些。最重要的是，不要相信关于饮食的一些不经之谈，让理智决定你的饮食习惯。你的身体会因此而感谢你。