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
Some animals apparently can resist cancer by strengthening their immune system in preparation for winter, Johns Hopkins research
Some animals apparently can resist cancer by strengthening their immune system in preparation for winter, Johns Hopkins research
admin
2011-03-01
71
问题
Some animals apparently can resist cancer by strengthening their immune system in preparation for winter, Johns Hopkins researchers said on Wednesday.
The scientists said their study is the first to show that the central nervous system, reacting to environmental changes, may spark changes in the body’s immune system that control the growth of tumors.
They said if that is the ease, a better understanding of how the process works eventually could lead to new cancer treatments.
Dr. Randy Nelson, an associate professor of psychology at Hopkins, stressed at a meeting of the Society of Neuroscience that further study would be needed to confirm a connection between the length of the day, the animals’ immune system and cancer. More work also would be needed to show that the findings could be applied to human cancer.
Dr. Faye Austin, an immunologist with the National Cancer Institute in Bethesda, said: "It’s a very intriguing observation that the length of exposure to light can affect the growth of a tumour. But I think that the draws really need further work to clarify the mechanics."
But Austin said the findings were surprising and important, only because they open up a new approach for research.
Studies showed that stress weakened the immune system in animals. They figured that because winter is stressful, the season probably causes exertion (影响) on the immune system.
The researchers reasoned that animals that compensated by boosting (促进) their immune systems as winter approached would have a better chance of surviving and producing offspring.
"In the same way that animals have evolved to select the best time to breed, it struck me that animals ought to be able to predict when conditions would be challenging immunologically." Nelson said.
Dr. Nelson has drawn a conclusion that ______.
选项
A、the findings of animals’ resistance to cancer can be applied to human cancer treatments
B、the length of exposure to light can affect the growth of a tumor
C、there is a relation between the length of the day, the animals’ immune system and cancer
D、there is a new approach for studying the function of central nervous system in the body’s immune system
答案
D
解析
文中第二段说明了霍普金斯的研究人员在研究中发现了中枢神经系统会对变化的环境做出反应并导致生物体内的免疫系统发生变化。与D选项的意思最为接近。选项C不合题意,因为在第四段中Neison认为还需要进一步研究加以确认D选项所表述的意思。
转载请注明原文地址:https://kaotiyun.com/show/rAkd777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Inthefuturecomputerswilltendtobemade______.Itisimpliedthattheemotionalcomputer______.
Inthefuturecomputerswilltendtobemade______.Emotionalintelligenceisimportantbecause______.
Ithasalwaysbeenaproblemtodecidewhether"popularmusic"ismusicwhichrepresentsthepeopleorissimplymusicthatthe
Bythetimewehadcompletedourpreparations,theskywasbeginningtogrowrapidlylighter,althoughthesunwasnotyetabo
YouhavereadthefollowingmagazineadvertisementinwhichaAmericangirlislookingforpen-friendsandyouwanttocontact
Sometimeago,Idiscoveredthatoneofthechairsinmyfronthallhadabrokenleg.Ididn’tforeseeanygreatdifficultyin
SupposethatyouhavereceivedaletterfromyourfriendLiling,whowillattendthefinalexaminationnextweek.Inhisletter
Likefinefood,goodwritingissomethingweapproachwithpleasureandenjoyfromthefirsttastetothelast.Andgoodwriters
AspeciallabattheUniversityofChicagoisbusyonly【C1】______.Itisadream【C2】______whereresearchersareatwork【C3】___
Thelongyearsoffoodshortageinthis’countryhavesuddenlygivenwaytoanapparentabundance.Storesandshopsarechokedw
随机试题
Ifyou(willbuy)oneboxatthe(regularprice),youwouldreceive(anotherone)atno(extra)cost.
陈某因涉嫌盗窃单位的电脑被公安机关拘传,下列说法中正确的是哪项?( )
受到行政处罚的当事人的权利不包括()。
依法设立的公司的成立日期为()。
某市人民法院对一起抢劫、杀人案进行审理后,判决主犯张某死刑并剥夺政治权利终身。从这一事例可看出()。①人民法院是国家的审判机关②人民法院是国家的法律监督机关③镇压敌人、惩罚犯罪是人民法院的任务之一④人民法院
生命周期消费假说与凯恩斯消费函数理论的区别在于:凯恩斯消费函数理论强调当前消费支出与当前收入的相互联系,而生命周期假说则强调当前消费支出与家庭整个一生的全部预期收入的相互关系。()
研究不同性别大学生生源地的人数分布是否存在显著差异,最适宜的统计方法是
中华人民共和国成立初期,面临着的困难和问题包括()
设随机变量X的概率密度函数为f(x)=(-∞<x<+∞),则其分布函数为()
A.complementaryB.constituteC.contrastD.crammedE.dramaticallyF.enlargingG.enteredH.extraI.
最新回复
(
0
)