We know the effect calories have on your body．For each pound of weight that your body carries，it takes about 12 calories per pound per day to keep it alive．If you weigh 150 pounds，you therefore need about(150X 12)1，800 calories per day to keep yourself alive and maintain that same weight．

If you were to eat more than 1，800 calories per day，the extra turns into fat．

It takes about 3，600 calories to make a pound of fat．

The graph below shows your eating pattern before，during and after the diet．

Note that the graph assumes that you，like most people，eat any number of calories per day．Some days you are“good”and eat less，and some days you are“bad”and eat more，but the assumption is that it averages out to 2，000 calories per day over the long run．

The diet really takes the weight off．

But the weight comes right back when you

return to your“normal”eating pattern．

The weight appears to come back so

quickly because when you are at your

lightest。you tend to gain more weight each

day．The lighter you are，the fewer calories

you need．If you only need l，500 calories

per day and you’re eating 2，000，you’re going to gain weight faster than if you need

1，800 and you’re eating 2，000．

 There are only two ways to keep the weight off：

?Change your overall eating pattern so that you take in，on average，fewer calories than before you went on the diet．

?Start exercising so that you“burn”the extra calories you take in．

?The best course of action is a combination of these two choices．

64．Which of the questions does the passage answer?

A．Why does the weight come back so quickly once one stops dieting?

B．Why does calorie play so important a part in keeping fit?

C．Why do some people get fatter in the modern society?

D．Why do people need to burn calories every day?

65．How will a person become if there is calorie more than needed?

A．He might feel sick．                                   B．He might gain weight．

C．He must see a doctor at once．                   D．He w0111d eat more than he can．

66．Who might get heavy more quickly if they eat 2500 calories per day?

A．A woman of 167 pounds．                          B．A man of 157 pounds．

C．A man of 147 pounds．                              D．A woman of 160 pounds．

67．Which of the following statements will the author NOT agree to according to the passage?

A．People don’t have to diet because once they stop，they will gain weight．

B．People’s weight can determine the amount of calories needed．

C．Dieting people can exercise more and take in less calories in the long run．

D．Thin people hoping to get weight don’t have to go on dieting．