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[originaltext] Vitamins are essential to life. Today there are many kinds of
[originaltext] Vitamins are essential to life. Today there are many kinds of
游客
2023-08-01
49
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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.
B、Vitamin B.
C、Vitamin C.
D、Vitamin D.
答案
A
解析
Which kind of vitamin is of primary importance to good eyesight?
根据选项可知问题可能要求选择某种维生索。本题关键句为“Vitamin A is most important for good eye- sight.”
维生素A对好的视力最重要。故正确答案为A)。
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