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
Cancer develops over a long time, which means that you have years——typically decades——in which to hinder or promote it. Research
Cancer develops over a long time, which means that you have years——typically decades——in which to hinder or promote it. Research
admin
2011-01-06
73
问题
Cancer develops over a long time, which means that you have years——typically decades——in which to hinder or promote it. Researchers are finding that what you eat may interfere with cancer growth at various stages. For example, certain foods can block the chemicals that initate cancer. Antioxidants(抗氧化剂), found in some vitamins and minerals, can snuff out oxygen free radicls (氧自由基), substances that are thought to make cells more susceptible to cancer, and they can even repair some of the cellular damage that has been done. And some food—wheat bran(麦,糠) in particular—has been shown to shrink precancerous(癌症前期的) cells.
A recent review of 17 studies from 17 nations reveals that people who eat the most fruits and vegetables have about half the cancer raters of those who eat the least. In fact, some research suggests that frequent consumption of fruits and vegetables can cut the risk of lung cancer even in smokers.
One of the most studied antioxidants in vegetables and fruits thought to protect against cancer is beta-carotene(β胡萝卜素), concentrated in deep green, yellow and orange vegetables such as carrots, sweet potatoes and spinach.
Research also shows that beta-carotene can change in the body to retinoic acid (维生素A酸), a substance used in clinical trials to treat certain cancers.
Here are some of the foods that contain cancer-fighting chemicals.
Tomatoes. One of the compounds in tomatoes that is thought to reduce the risk of cancer is lycopene(蕃茄素), the pigment (色素) that makes tomatoes red. Lycopene, an antioxidant that is also found in watermelons and apricots, quenches certain cancer-triggering oxygen free fadicals. Healthy people with the most blood lycopene.
Green Vegetables. A recent Italian study showed that dark-green leafy vegetables lower the risk of many cancer. Spinach, broccoli, kale and dark-green lettuces are chock-full of antioxidants, including beta-carotene, folate(叶酸) and lutein(叶黄素).A good rule of thumb(单凭经验的做法) : the darker the vegetable, the more antioxidants within.
Pungent preventives(刺激性的预防物). A whole host of chemicals thought to have cancer-inhibiting properties have been identified in allium vegetables, which include garlic, onions and scallions(大葱). Animal studies show that many of these chemicals block carcinogens that have been linked to colon, stomach, lung and liver cancer. A study at Pennsylvania State University found that feeding rats various garlic extracts and preparations(配制好的食物) reduced mammary tumors by as much as 71 percent. In humans, studies suggest that those who eat more onions and garlic are less prone to gastrointestinal cancer.
Research suggests that garlic compounds may even interfere with cancer progression. A recent German study found that ajoene, a garlic compound, is toxic to malignant cells. Garlic may also antagonize existing cancer by boosting(促进) immune functions, according to researchers at Loma Linda University School of Medicine. Their study, done on mice, found that garlic’s sulfur compounds increased the activity of macrophages and T-lymphocytes(淋巴细胞), two of the components of the immune system that destroy tumor ceils.
Soybeans contain at least five compounds believed to inhibit cancer.
选项
A、Right
B、Wrong
C、Not mentioned
答案
C
解析
该句句意勾“大豆至少含有五种据信能够抑制癌症的化合物。”但文中并未提及这点。
转载请注明原文地址:https://kaotiyun.com/show/6zmd777K
本试题收录于:
职称英语卫生类B级题库职称英语分类
0
职称英语卫生类B级
职称英语
相关试题推荐
Directions:Usingtheinformationinthetext,completeeachsentence6-10,withawordorphrasefromthelistbelow.Foreach
TheUSmaysofarhaveenjoyedgoodluckinescapingadirectSARShit,butofficialsaren’tleavinganythingtochance.Thebes
TheUSmaysofarhaveenjoyedgoodluckinescapingadirectSARShit,butofficialsaren’tleavinganythingtochance.Thebes
1.Onceitwaspossibletodefinemaleandfemaleroleseasilybythedivisionoflabor.Menworkedoutsidethehomeandearned
ItiscommonlybelievedintheUnitedStatesthatschooliswherepeoplegotogetaneducation.Nevertheless,ithasbeensaid
Lookatthequestionsforthispart.Youwillhearapassageabout"ALittleHouseintheBigWoods".Youwilllistentoit
Lookatthetenstatementsforthispart.Youwillhearapassageabout"AResearchonSleep".Youwilllistentoittwice.
CancerChatisdifferentfromotherforumsinthatWhichisNOTtrueofRebekahGibbs?
Stopclamberingovermysister’sfurniture.
Itisnousedebatingtherelativemeritsofthispolicy.
随机试题
钢材按化学成分分为()两大类。
该患儿经补液治疗后脱水好转已有尿,治疗12小时后,出现四肢无力,呼吸浅,心率140次/分,心音低钝,肠鸣音减弱,13小时后出现四肢抽动,为明确诊断需要进行哪些辅助检查()
患者,男,38岁,症见往来寒热,心烦喜呕,不思饮食,口苦咽干,舌苔薄黄,脉弦。治宜选方剂
患者,女,24岁。产后大出血,继则冷汗淋漓,甚则晕厥。其病机是
属中医学防治特点的确切表述是
本题中所给资料中,涉及错误之处的有( )。2003年应缴纳企业所得税和地方所得税共计为( )万元。
小聪现在是一名初中生。小学时成绩优秀,并在小学的升学考试中以第一名的成绩考入重点中学。进入初中后,因学习不适应,渐渐地成绩下降到二十几名,考试给小聪的打击不小。从此,小聪来学校时总把衣服的拉链拉得很高,将头藏进衣服里,不愿见人。个人情绪属于()
习近平总书记指出,体育强国的基础在于(),要通过举办北京冬奥会、冬残奥会,把我国冰雪运动特别是雪上运动搞上去,在3亿人中更好推广冰雪运动。
A.Justmycameras,myclothesandsomebooksB.WouldyoumindopeningthebagformeC.Whatisthepurposeofyourvisittot
简论春秋时期公布成文法的历史意义。
最新回复
(
0
)