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 bums 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. Cut down on other meals if you' 11 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, repeat- ed 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 loss better than dieting a- lone 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.
　　51. 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
　　52, 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
　　53. Which of the following saying is tree 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.
　　54~ 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
　　55. The word "shape" in the last sentence means
　　A．break
　　B．form
　　C．get rid of
　　D．change
　　參考譯文
　　對大多數(shù)人來說，節(jié)食是人生中一件煩人的事情。由于眾多有關(guān)營養(yǎng)方面的信息相互矛盾，要講出哪一種減肥措施真正奏效不是件容易的事。先讓我們從解開這些擾人的謎團(tuán)開始。
　　1．所有食物產(chǎn)生的熱量都是一樣的。
　　吃什么而不是吃多少是長胖的主要原因。來自脂肪的熱量(卡路里)使體重增加。原因是：在消化過程中，身體對蛋白質(zhì)和碳水化合物的代謝比對脂肪的代謝要消耗更多的熱量。
　　2．餐后甜食是大忌。
　　蛋糕、餡餅和冰淇淋可以合理地加進(jìn)日常飲食。關(guān)鍵在于適度。如果你要去一家以甜食著稱的飯店吃飯，那么你要在其他幾頓飯上少吃點。或者不加節(jié)制，但只能吃幾小塊。
　　3．禁用快餐食品。
　　面包夾一塊純精牛肉是有益健康的可供選擇的食品。同樣可以選擇烤雞或拌有低卡調(diào)料的綠色色拉。但是要小心法式油炸土豆條，奶昔和粘有用雞蛋和牛奶調(diào)制成的面糊的雞肉或魚肉。
　　4．禁食是最見效的減肥法。
　　一些研究表明：迅猛地減少卡路里的攝入量可使你的身體處于一種“饑餓狀態(tài)”，這既保存了卡路里又使你的新陳代謝速度減慢。你越不讓自己吃東西，你的身體就越會儲存熱量。因此，從長遠(yuǎn)來看，反復(fù)禁食也許實際上是在破壞你減肥努力的成果。
　　5．要減肥只需注重你的飲食。
　　根據(jù)專家的看法，鍛煉結(jié)合節(jié)食比單獨注重節(jié)食更能做到減肥。專家們也同意堅持經(jīng)常而又適度的鍛煉比偶爾做些大運動量的鍛煉更重要。肥胖病研究者K鼓勵病人做一系列少量的身體活動：以爬樓梯代替坐電梯；把車停得盡量遠(yuǎn)一些。
　　最重要的是，不要相信關(guān)于飲食的一些不經(jīng)之談，讓理智決定你的飲食習(xí)慣。你的身體會因此而感謝你。