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The Best Way to Reduce Your Weight

You hear this:"No wonder you are fat.All you ever do is eat."You feel sad:"I skip my breakfast and supper.I run every morning and evening.What else can I do?"Basically you can do nothing.Your genes,not your life habits,determine your weight and your body constantly tries to maintain it.

Albert Stunkard of the University of Pennsylvania found from experiments that,"80 percent of the children of two obese parents become obese,as compared with no more than 14 percent of the offspring of two parents of normal weight."

How can obese people become normal or even thin through dieting?Well,dieting can be effective,but the health costs are tremendous.Jules Hirsch,a research physician at Rockefeller University,did a study of eight fat people.They were given a liquid formula providing 600 calories a day1.After more than 10 weeks,the subjects lost 45kg on average.But after leaving the hospital,they all regained.The results were surprising:by metabolic measurement,fat people who lost large amounts of weight seemed like they were starving.They had psychiatric problems.They dreamed of food or breaking their diet2.They were anxious and depressed;some were suicidal.They hid food in their rooms.Researchers warn that it is possible that weight reduction doesn't result in normal weight,but in an abnormal state resembling that of starved non-obese people.

Thin people,however,suffer from the opposite:They have to make a great effort to gain weight.Ethan Sims,of the University of Vermont,got prisoners to volunteer to gain weight.In four to six months,they ate as much as they could.They succeeded in increasing their weight by 20 to 25 percent.But months after the study ended,they were back to normal weight and stayed there.

This did not mean that people are completely without hope in controlling their weight.It means that those who tend to be fat will have to constantly battle their genetic inheritance if they want to significantly lower their weight.

The findings also provide evidence for something scientists thought was true-each person has a comfortable weight range3.The range might be as much as 9kg.Someone might weigh 60-69kg without too much effort.But going above or below the natural weight range is difficult.The body resists by feeling hungry or full and changing the metabolism to push the weight back to the range it seeks.

練習(xí):

1.What determines your weight?

A)Your working manner.

B)Your eating habit.

C)Your life style.

D)Your genes.

2.What did Jules Hirsch do in his study?

A)He let the eight fat people skip supper.

B)He let the eight fat people skip breakfast.

C) He let the eight fat people run every morning and evening.

D)He gave the eight fat people a liquid formula providing 600 calories a day.

3.What happened to the eight fat people after they left the hospital?

A)They went mad.

B)They killed themselves.

C) They were back to normal weight.

D)They attempted suicide.

4.What did Ethan Sims make his subjects do?

A)Battle their genetic inheritance.

B)Increase their weight.

C)Stay at home.

D)Lower their weight.

5.What did scientists think was true?

A)Each person has a fixed weight range.

B)Each person has a weight range of 9 kg.

C)Each person wants to control his weight.

D)Each person wants to eat to his heart's content.

答案及解析：

1.D 問(wèn)題問(wèn)的是：什么決定了你的體重？A說(shuō)的是：你的工作方式。B說(shuō)的是：你的吃飯習(xí)慣。C說(shuō)的是：你的生活風(fēng)格。D說(shuō)的是：你的基因。正確答案是D.第一段中有這么一句話：Your genes，not your life habits，determine your weight and your body constantly tries to maintain it.你的基因而不是你的生活習(xí)慣決定了你的體重，因此你的身體總是試圖保持它。

2.D 問(wèn)題問(wèn)的是：Jules Hirsch在他的研究中做了什么？A說(shuō)的是：他讓八個(gè)胖子不吃晚飯。B說(shuō)的是：他讓八個(gè)胖子不吃早飯。C說(shuō)的是：他讓八個(gè)胖子早晚都跑步。D說(shuō)的是：他給八個(gè)胖子一種每天提供600熱卡的流食配方。D是正確的。第三段有這么一句話：They were given a liquid formula providing 600 calories a day.他們被給予一種流食配方，每天提供600熱卡。

3.C 問(wèn)題問(wèn)的是：八個(gè)胖子出院后怎么啦？ A說(shuō)的是：他們發(fā)瘋了。B說(shuō)的是：他們自殺了。C說(shuō)的是：他們又回到了原來(lái)的體重。D說(shuō)的是：他們?cè)噲D自殺。C是正確的。第四段的最后一句話是這樣的：But months after the study ended，they were back to normal weight and stayed there.研究結(jié)束幾個(gè)月后，他們的體重又回到了原來(lái)的樣子并保持不變。

4.B 問(wèn)題問(wèn)的是：Ethan Sims讓他的調(diào)查對(duì)象干什么？ A說(shuō)的是：跟他們的基因遺傳物做斗爭(zhēng)。B說(shuō)的是：增加他們的重量。C說(shuō)的是：呆在家里。D說(shuō)的是：減少體重。第四段有一個(gè)句子是這么說(shuō)的：Ethan Sims，of the University of Vermont，got prisoners to volunteer to gain weight.Vermont大學(xué)的Ethan Sims讓犯人自愿增加體重。可見(jiàn)B是正確的答案。

5.A 問(wèn)題問(wèn)的是：科學(xué)家認(rèn)為什么是對(duì)的？ A說(shuō)的是：每個(gè)人的體重都有一個(gè)適當(dāng)?shù)姆�度。B說(shuō)的是：每個(gè)人的體重幅度是9公斤。C說(shuō)的是：每個(gè)人都想控制自己的體重。D說(shuō)的是：每個(gè)人都想吃得高興。正確答案是A.最后一段的第一句話是這么說(shuō)的：The findings also provide evidence for something scientists thought was true-each person has acomfortable weight range.結(jié)論還證實(shí)了科學(xué)家認(rèn)為是正確的一點(diǎn)，即每個(gè)人的體重有一個(gè)適當(dāng)?shù)姆�度�?br />