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 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.