2. 外语
  3. 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

admin2015-04-30  71
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
【C6】
选项
答案L
解析 该空格前为in the，因此可以确定此处应该选择一个名词。它们从正常的细胞中偷缺少的电子，同时损害健康细胞和它的DNA，所选单词应表示“过程”的含义，选项中只有L符合，process意为“过程”。
转载请注明原文地址:https://kaotiyun.com/show/54h7777K
0

大学英语六级

相关试题推荐
随机试题
最新回复(0)