单项选择题

It is implied in the first paragraph that ______.

A．eating more than usual might make us live longer
B．if we go on a diet when old, we may keep healthy
C．dieting might be needed
D．we have to diet in the early childhood if we want to live longer

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单项选择题

According to the last two paragraphs, Spindler believes that ______.

A．calorie restriction is very important to young people
B．seeing the effect of a diet, people will eat less than normal
C．dieting is not a good method to give us health and a long life
D．drugs do not have the effects of calorie restriction