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
A study by scientists in Finland has found that mobile phone radiation can cause changes in human ceils that might affect the br
A study by scientists in Finland has found that mobile phone radiation can cause changes in human ceils that might affect the br
admin
2010-06-30
70
问题
A study by scientists in Finland has found that mobile phone radiation can cause changes in human ceils that might affect the brain, the leader of the research team said.
But Darius Leszczynski, who headed the g-year study and will present findings next week at a conference in Quebec(魁北克), said more research was needed to determine the seriousness of the changes and their impact on the brain or the body.
The study at Finland’s Radiation and Nuclear Safety Authority found that exposure to radiation from mobile phones can cause increased activity in hundreds of proteins in human cells grown in a laboratory, he said.
"We know that there is some biological response. We can detect it with our very sensitive approaches, but we do not know whether it can have any physiological effects on the human brain or human body," Leszczynski said.
Nonetheless the study, the initial findings of which were published last month in the scientific journal Differentiation, raises new questions about whether mobile phone radiation can weaken the brain’s protective shield against harmful substances.
The study focused on changes in cells that line blood vessels and on whether such changes could weaken the functioning of the blood-brain barrier, which prevents potentially harmful substances from entering the brain from the bloodstream, Leszczynski said.
The study found that a protein called hsp27 linked to the functioning of the blood-brain barrier showed increased activity due to irradiation and pointed to a possibility that such activity could make the shield more permeable(能透过的), he said.
"Increased protein activity might cause cells to shrink—not the blood vessels but the cells themselves—and then tiny gaps could appear between those cells through which some molecules could pass." he said.
Leszezynski declined to speculate on what kind of health risks that could pose, but said a French study indicated that headache, fatigue and sleep disorders could result.
"These are not life-threatening problems but can cause a lot of discomfort," he said, adding that a Swedish group had also suggested a possible link with Alzheimer’s disease.
"Where the truth is I do not know," he said.
Leszezynski said that he, his wife and children use mobile phones, and he said that he did not think his study suggested any need for new restrictions on mobile phone use.
Which of the following is NOT true according to the passage?
选项
A、The research in Finland found that mobile phone radiation will affect one’s brain.
B、Mobile phone radiation can cause increased activity in hundreds of protein in human cells.
C、Increased protein activity might cause ceils to shrink.
D、Lszczynski forbid his wife and children to use mobile phone after his research.
答案
D
解析
此题用排除法比较容易解决。文章最后提到Leszczynski自己、家人都在用手机,没有任何迹象表明他禁止他们用手机,所以答案是D。
转载请注明原文地址:https://kaotiyun.com/show/XAJd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Onedayagroupofpeoplewalkedintoacaveandpaintedhandprintsalloverthewalls.Tenthousandyearslater,archaeologists
Inpopulardiscussionsofemissions-rightstradingsystems,itiscommontomistakethesmokestacksforthetrees.Forexample,
InpartsofBrazil’spoornortheast,snakesandparrotsareonsalebytheroadsideforafewreais.InBrazil,aselsewherein
"Themoregadgetsthereare,the【C1】______thingsseemtoget."saidHonoreErvin,co-authorofTheEtiquetteGirls:ThingsYouN
"Themoregadgetsthereare,the【C1】______thingsseemtoget."saidHonoreErvin,co-authorofTheEtiquetteGirls:ThingsYouN
Somepeopleclaimthattelevisionisgoodforchildrenbecauseitgetschildrenclevererbywatchingit,whileothersthinkthat
Psychologiststakecontrastiveviewsofhowexternalrewards,from【C1】______praisetocoldcash,affectmotivationandcreativit
Psychologiststakecontrastiveviewsofhowexternalrewards,from【C1】______praisetocoldcash,affectmotivationandcreativit
Periodicallyinhistory,therecomeperiodsofgreattransitioninwhichworkchangesitsmeaning.Therewasatime,perhaps10,
Whatisthemeaningof"Skatingonthinice"?
随机试题
信息处理技术就是对获取到的信息进行识别、______、加工,保证信息安全、可靠地存储。
根据《物权法》的规定,下列哪一类权利不能设定权利质权()
遴选非处方药时首先考虑的是
《土地法》对耕地的保护制度包括()。
国有经济是社会主义全民所有制经济,是国民经济中的主导力量。国家应保障国有经济的巩固和发展。( )
下列关于代理的表述中,错误的是()。
下列选项中属于管理学的研究方法的有()。
关于新中国知识分子的阶级属性,周恩来作出的论断是他们属于()
某寄存器的内容为5EH,先取反再执行一条与立即数45H相异或的指令,结果为(12)。若某寄存器的内容为5FH,则执行一次与立即数7DH相与的指令后,所得的结果为(13)。
ResearchersatChildren’sHospitalofPittsburghannouncedtheyhaddiscovered______evidencethatavirusisinvolvedinwhat
最新回复
(
0
)