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

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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

单项选择题

At one time doctors discouraged taking multivitamins because they believed that multivitamins______.

A．could not easily be absorbed by the human body
B．were potentially harmful to people's health
C．were too expensive for daily consumption
D．could not provide any cure for vitamin deficiencies