A、Vitamin A is essential only to adults’ eyesight. B、Vitamins can only be found in meat, fruit and vegetables. C、A well balanced

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问题  
Vitamins are essential to life. Today there are many kinds of vitamins. A deficiency in many of these can lead to illness.
    Vitamin A is most important for good eyesight. But it is also important for general good health. Liver contains a large amount of vitamin A, but vitamin A is also found in fish, meat, milk, butter, and in some fruits and vegetables.
Vitamin B in fact consists of twelve different chemicals, which are found in eggs, cheese, butter, meal flour and vegetables. If a person does not have enough vitamin B in his diet, it may affect his whole body, particularly the skin, the nervous system and the heart.  Deficiency in vitamin B results in a disease called beri-beri, a sort of disease in feet.
   Vitamin C prevents scurvy and helps to heal wounds. Some doctors. believe that large quantities of vitamin C help people avoid colds. Fruits and uncooked vegetables are rich in vitamin C. a lack of vitamin C can cause a disease called scurvy.
   Vitamin D is essential for the growth of bones and teeth and is found in fish, liver, oil and milk.
   Vitamins can be produced and are sold, but a well balanced diet will provide the necessary amount of vitamins.

选项 A、Vitamin A is essential only to adults’ eyesight.
B、Vitamins can only be found in meat, fruit and vegetables.
C、A well balanced diet will provide enough vitamins.
D、Vitamins can be manufactured, we then need not try to balance our diet.

答案C

解析 [听力原文]
What can we learn from the passage?
通过选项可知本题可能关于维生素和健康或饮食的关系。本题关键句为“a well balanced diet will provide the necessary amount of vitamins.”平衡的饮食就能够提供足量维生素。故正确答案为C)。
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