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The reason fruits and vegetables are so important to your overall health is that they are major purveyors of antioxidants. A
The reason fruits and vegetables are so important to your overall health is that they are major purveyors of antioxidants. A
admin
2015-02-12
45
问题
The reason fruits and vegetables are so important to your overall health is that they are major purveyors of antioxidants.
Antioxidant molecules are like the missile【C1】______system of your body, preventing damage from molecular bombs called free radicals. It works like this: in order to breathe, move, or eat, your body’s cells【C2】______food and oxygen into energy. This chemical reaction releases【C3】______byproducts, the free radicals we mentioned. Basically, they’re highly reactive【C4】______of oxygen that are missing an electron.
【C5】______for that missing electron, they steal them from normal cells, damaging the healthy cell and its
DNA in the【C6】______. This damage eventually【C7】______to any number of major health problems, including heart disease, memory loss, and cancer.
Antioxidants, however,【C8】______with this process by giving free radicals one of their own electrons to stabilize them. Or they combine with free radicals to form different, more【C9】______compounds. There are also antioxidant enzymes that help free radicals react with other chemicals to produce safe, instead of toxic, substances. Antioxidants, for instance, help prevent "bad" LDL cholesterol from becoming【C10】______and forming plaque(斑). This is the reason the health establishment is so insistent on people eating more fresh produce: It provides around-the-clock defenses against free-radical damage to your arteries.
A)change B)contributes C)convert D)defense E)Desirous
F)Desperate G)forms H)harmful I)interfere J)offense
K)participates L)process M)stable N)stickier O)thinner
【C5】
选项
答案
F
解析
该空格位于句子开头,空格后为介词for,这一部分在整句中作状语,因此填入该空格的词应为首字母大写的形容词、现在分词或过去分词。根据上下文语义关系可知,所选单词应表示“想要”的意思,结合选项只有F符合,desperate意为“极想得到的”,且desperate for sth.为固定搭配,意为“渴望得到……”。
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0
大学英语六级
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