单项选择题

What can you infer from the passage

A．Extremely high dose of Vitamin E can cause danger.
B．With proper dose of Vitamin E old people could be safer from infectious disease.
C．Researchers have proved that Vitamin E has no side effects.
D．Individuals with serious conditions should consult their doctors.
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单项选择题
What's the main idea of the passage
A．People will be in perfect health if they take Vitamin E every day.
B．Study showed that people who took Vitamin E regained their Flexibility.
C．Vitamin E may help prevent Alzheimer's.
D．Vitamin E offers a range of advantage if old people take proper dose of Vitamin E every day.
单项选择题
More study are needed to learn ______.
A．Vitamin E's side effects
B．who will gain the greatest advantages by taking Vitamin E
C．Vitamin E's other benefits
D．how Vitamin E cuts risks of heart attack
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