单项选择题

In human history, people's views on body weight______.

A．were closely related to their religious beliefs
B．changed from time to time
C．varied between the poor and the rich
D．led to different moral standards
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单项选择题
Swept by the prevailing trend, the author______.
A．had to go on a diet for the greater part of her life
B．could still prevent herself from going off the track
C．had to seek help from rich distant relatives
D．had to wear highly fashionable clothes
单项选择题
The author concludes the passage with the advice that______.
A．the benefit of daily multivitamin intake outweighs that of exercise and a balanced diet
B．it's risky to take multivitamins without knowing their specific function
C．the potential benefit of multivitamins can never be overestimated
D．it's reasonable to take a rational dose of multivitamins daily
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