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D) They tend to exaggerate the healthful effect of "light" beer.
17. Some people dislike exercise because ____.
A) they find consulting caloric-expenditure charts troublesome
B) they don’t think it possible to walk 3 miles every day
C) they find it hard to exercise while on a diet
D) they think it is physically exhausting
18. "Even exercise professionals concede half a point here" (Line 3, Para. 2) means “They ____”.
A) are not fully convinced that dieting can help maintain one’s new weight
B) agree that the calories in a small piece of pastry can be difficult to work off by exercise
C) are not sufficiently informed of the positive role of exercise in losing weight
D) partially believe diet plays a supporting role in weight reduction
19. What was confirmed by the Boston University Medical Center’s study?
A) Weight reduction is impossible without exercise.
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