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Getting enough vitamins is essential to life,although the body has no nutritional use for( )vitamins.Many people,nevertheless,believe in being on the“safe side”and thus take extra vitamins.However,a well‐balanced diet will usually meet all the body"s vitamin needs.

单选题
Getting enough vitamins is essential to life,although the body has no nutritional use for( )vitamins.Many people,nevertheless,believe in being on the“safe side”and thus take extra vitamins.However,a well‐balanced diet will usually meet all the body"s vitamin needs.

Aexceptional

Bexceeding

Cexcess

Dexternal

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