单项选择题

Vitamin E is______.

A．very popular among some people
B．effective in memory enhancement
C．very helpful to the elderly actions
D．destructive in aging and cancers
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单项选择题
According to the author, which one of the following does NOT belong to the category of antioxidants besides vitamin E
A．Vitamin Ａ.
B．Vitamin Ｂ.
C．Vitamin Ｃ.
D．Caroten
单项选择题
The test conducted is mainly on______.
A．anti-aging effect
B．cognitive function
C．vitamin E intake
D．antioxidants
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