首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
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
2015-04-30
39
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
【C1】
选项
答案
D
解析
该空格前为名词missile,空格后为名词system,因此填入该空格的词应为名词。根据句意和下文可知,所选单词应表示“防御”之意,选项中只有D符合,defense意为“防卫,防御”。
转载请注明原文地址:https://kaotiyun.com/show/M4h7777K
0
大学英语六级
相关试题推荐
Itisimportantthatwebemindfuloftheearth,theplanetoutofwhichwearebornandbywhichwearenourished,guided,heal
Itisimportantthatwebemindfuloftheearth,theplanetoutofwhichwearebornandbywhichwearenourished,guided,heal
Itisimportantthatwebemindfuloftheearth,theplanetoutofwhichwearebornandbywhichwearenourished,guided,heal
Itisimportantthatwebemindfuloftheearth,theplanetoutofwhichwearebornandbywhichwearenourished,guided,heal
Itisimportantthatwebemindfuloftheearth,theplanetoutofwhichwearebornandbywhichwearenourished,guided,heal
A、Shehaslostsomeofherimportantstuff.B、Thereissomethingwrongwithhereyes.C、Shedoesn’tknowwheretogettheinform
随机试题
下列关于持续整理形态的说法,不正确的是()。
组织内部设公关机构有四种基本模式即部门隶属型________、________、________。
Hisexplanation______hedidn’tseethenoticeisunsatisfactory.
某高血压病人,突然剧烈头痛、喷射性呕吐、昏迷,诊断为脑出血。正确的护理措施是( )。【历年考试真题】
下列关于农户贷款的表述,错误的有()。
某卷烟厂为增值税一般纳税人,其消费税以一个月为一期缴纳,其申报纳税的期限为自期满之日起()。
甲公司是一家制造业企业,产品市场需求处于上升阶段。为增加产能,甲公司拟于2018年初添置一台设备,有两种方案可供选择。方案一:自行购置。预计设备购置成本1600万元。按税法规定,该设备按直线法计提折旧,折旧年限5年,净残值为5%,预计该设备使用4年,每年
WhathappenedattheUnitedNations?Howdidthecriticslikethenewplay?Soonafteranevent【C1】______,newspapersar
Mandyhasagardenthatisshapedlikearighttriangle,asshownbelow.Todeterminehowmuchfencingtobuytoenclosehero
Whichofthefollowingsentenceshasasubjectcomplement?
最新回复
(
0
)