Questions 31-37
       Vitamins, which maintain and facilitate the body's various functions, are an important part ofour diet. Many people take vitamin supplements to help them.__(31)__aily allowance. However,recent researches have recommended that people who take vitamin supplements may be gettingtoo much of a good thing.
        Many of the foods we eat already have vitamin.__(32)__ added to them. People drinking aglass of orange juice may think that they're only getting a dose of vitamin C. In fact, they are alsogetting added calcium and vitamin D. Breakfast cereal alone provides more than half a person'sdaily allowance of some vitamins.__(33)___ hese levels with supplements can cause some sideeffects.
       According to the Office of Dietary supplement in the US, too much vitamin A can causeheadaches and affect bone strength. Too much iron can affect the liver and__(34)__ npleasantvomiting. Vitamin supplements are not__(35)__ the same strict tests as medicine, which makesknowing what's really in them problematic. Besides, they are not tested for safety or effectivenessbecause they are not considered a__(36)__for disease.        If you feel that you must take vitamin supplements, nutritionists suggest taking themin__(37)__doses. This means that if you take a calcium pill, you shouldn't drink too much milk.They also advise against excessive intake, such as eating three energy bars for breakfast and thentaking a dose of vitamin A. If your diet is relatively balanced, chances are you are already OKwhere vitamins are concerned.
【題組】31.
(A) informed
(B) civilized
(C) unexpected
(D) recommended