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
People from large families have an increased risk of stomach cancer, suggests a study that followed more than 7,000 Japanese-Ame
People from large families have an increased risk of stomach cancer, suggests a study that followed more than 7,000 Japanese-Ame
admin
2013-06-02
103
问题
People from large families have an increased risk of stomach cancer, suggests a study that followed more than 7,000 Japanese-American men for 28 years.
The study concluded that family size had a major influence on the development of stomach cancer linked to the bacterium Helicobacter pylori (幽门螺杆菌), and that younger siblings (兄弟,姐妹,同胞,同属) from large families were especially prone to the most common form of stomach cancer.
H. pylori lives in the mucous (黏液的) layer of the stomach and is associated with peptic ulcers (消化器官溃疡) and stomach cancer. It’s estimated that half of the world’s population carries H. pylori in the stomach. It can be transmitted orally from person to person or through contact with human feces (粪便).
The study found that men who carried certain strains of H. pylori in their stomachs and had seven or more siblings had more than twice the risk of developing stomach cancer, compared to men with the same H. pylori strains who had one to three siblings.
The findings are published in the January 16 online issue of the journal Public Library of Science Medicine.
"This is a very carefully controlled study that clearly shows that there are factors in early childhood that affect the risk of developing cancer many decades later," study leader Dr. Martin J. Blaser, professor and chairman of the Department of Medicine, and professor of microbiology at New York University Medical Center and School of Medicine, said in a prepared statement.
"That early childhood events affect the risk of cancers occurring in old age is remarkable, and this may be a model for other cancers," Blaser said. He said that younger children in large families may acquire H. pylori from older siblings at a time when the younger children’s immune systems are still developing. This, in combination with the fact that the bacterium is already adapted to a genetically related person, means the younger children may have a more virulent H. pylori population in the stomach than if they’d acquired the germ from a non-relative.
The study concluded that ______.
选项
A、the conclusion had been proved
B、family size affects the development of stomach cancer strongly
C、family size is of no importance to stomach cancer
D、stomach cancer can be transmitted to others
答案
B
解析
文章第二部分就告诉我们,研究结果表明:家庭大小是影响胃癌发展的主要因素。这里只是将文中的major influence换成了impact...strongly。
转载请注明原文地址:https://kaotiyun.com/show/Oj67777K
0
大学英语六级
相关试题推荐
EnglishandAmericanjudgesobjecttoprisonterms.Anonviolentoffendercanchoose______.
Americansliketolaughandmakejokes.(36)______practicaljokes,whicharejokesintendedtotrickorpeople(37)______inso
A、AskJoantorecommendagoodrestaurant.B、HavedinneratJoan’shouse.C、IntroducethemselvestoJoan’sfriends.D、Trythedi
Directions:Inthispart,youwillhave15minutestogooverthepassagequicklyandanswerthequestionsonAnswerSheet1.Fo
A、Injection.B、Ontime.C、Workhard.D、Havearest.BM:OK,Iwillputyouontrialfortwomonths.Youmustberegularandpunc
TheUniversityLibraryisoneofthelargest【B1】______librariesinthecountry,witha【B2】______ofsometwomillionvolumes.
ConsideringhowjazzistranscribedinChinese,youmaybemisledintoassumingthatitisaculturalformbelongingtothosewh
Businessandgovernmentleadersalsoconsidertheinflationratetobeanimportantgeneralindicator.Inflationisaperiodof
A、Hewatchestoomuchtelevision.B、Hewon’tlistentoher.C、Heistoonaughtytobecontrolled.D、Hespendsallofhistimeon
Cigarettesaregoodforyourthroat,accordingtoadvertisementsfromhalfacenturyago.Todaysuchclaimsareunthinkable,as
随机试题
关于女性内外生殖器淋巴引流正确的是
工程设计管理模式的选择取决于()。
从目前我国现状来看,()主要用于在项目建设前期各阶段对于建设投资的预测和估计。
公共行政的主体是以()为主的公共管理组织。
多年来,文艺界存在这样的偏见,常常将专业与业余作为衡量水平高下的标准。长期受专业与业务观念的禁锢,有的人甚至以专业为贵,不屑与业余为伍。这段话的主要意思是()。
1990~1997年,新兴百货商场的销售额平均为( )1990~1993年,新兴百货商场利润变化的趋势大致符合下列哪幅图?( )
Beingsociablelookslikeagoodwaytoaddyearstoyourlife.Relationshipswithfamily,friends,neighbours,evenpets,will
媒介审判(中国人民大学,2010;上海大学,2014;复旦大学,2014;中国传媒大学,2016)
theburdenofproof
Peopleatthelowerendoftheincomescaletakemorepleasureintheirrelationshipsandenjoycaringforandconnectingwitho
最新回复
(
0
)