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Vitamins are organic compounds necessary in small amounts in the diet for th
Vitamins are organic compounds necessary in small amounts in the diet for th
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2025-04-03
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问题
Vitamins are organic compounds necessary in small amounts in the diet for the normal growth and maintenance of life of animals, including man.
They do not provide energy, 【C1】______do they construct or build any part of the body. They are needed for【C2】______foods into energy and body maintenance. There are thirteen or more of them, and if 【C3】______is missing a deficiency disease becomes【C4】______.
Vitamins are similar because they are made of the same elements—usually carbon, hydrogen, oxygen, and【C5】______nitrogen. They are different【C6】______their elements are arranged differently, and each vitamin【C7】______one or more specific functions in the body.
【C8】______enough vitamins is essential to life, although the body has no nutritional use for 【C9】______vitamins. Many people, 【C10】______, 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. [br] 【C6】
选项
A、in that
B、so that
C、such that
D、except that
答案
A
解析
上句提到维生素相似的原因,这句开始提到维生素也是有区别的,由于两个句子是平行的结构,本句的后半句也会解释为什么不同。因此空格处应填入表因果关系并连接原因状语从句的短语。except that不表因果,so that和such that后面接结果。只有in that后面接原因,并且空格前面的different与介词in连用,表示“在哪一方面不同”。故选A。
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