单项选择题

Some people dislike exercise because ______.

A．they think it is physically exhausting
B．they find it hard to exercise while on a diet
C．they don't think it possible to walk 3 miles every day
D．they find consulting caloric-expenditure charts troublesome

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单项选择题

What was confirmed by the Boston University Medical Center's study

A．Controlling one's calorie intake is more important than doing exercise.
B．Even occasional exercise can help reduce weight.
C．Weight reduction is impossible without exercise.
D．One could lose ten pounds in a year's time if there's no in crease in food intake.

单项选择题

What is said about the average American in the passage

A．They tend to exaggerate the healthful effect of "light" beer.
B．They usually ignore the effect of exercise on losing weight.
C．They prefer "light" beer and low-calorie bread to other drinks and food.
D．They know the factors that play a positive role in keeping down body weight.