词汇：
obese adj.肥胖的
metabolic adj.新陈代谢的
psychiatric adj.精神病的
注释：
1. They were given a liquid formula providing 600 calories a day.他们被给予一种流食配方，每天提供600热卡。
2. They dreamed of food or breaking their diet.他们梦中吃食品，或是不是只吃规定的食品。
3. The findings also provide evidence for something scientists thought was true-each person has a comfortable weight range.结论还证实了科学家认为是正确的一点，即每个人的体重有一个适当的幅度。
练习：
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 mornin8 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.
标准答案：D,D,C,B,A
解 析：1.D. 细节题。利用被选项中的细节信息结构(A：working manner; B: eating habit; C: life style; D: genes)共同作为答案线索， 在文章中查找答案相关句：
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