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
医学
Children should avoid using mobile phones for all but essential calls because of possible health effects on young brains. This i
Children should avoid using mobile phones for all but essential calls because of possible health effects on young brains. This i
admin
2013-11-14
72
问题
Children should avoid using mobile phones for all but essential calls because of possible health effects on young brains. This is one of the expected conclusions of an official government report to be published this week. The report is expected to call for the mobile phone industry to refrain from promoting phone use by children, and to start labeling phones with data on the amount of radiation they emit.
The Independent Expert Group on Mobile Phones, chaired by former government chief scientist William Stewart, has spent eight months reviewing existing scientific evidence on all aspects of the health effects of using mobile phones. Its report is believed to conclude that because we don’t fully understand the nonthermal effects of radiation on human tissue, the government should adopt a precautionary approach, particularly in relation to children.
There is currently no evidence that mobile phones harm users or people living near transmitter masts. But some studies show that cell-phones operating at radiation levels within current safety limits do have some sort of biological effect on the brain.
John Tattersall, a researcher on the health effects of radiation at the Defense Evaluation and Research Agency’s site at Porton Down, agrees that it might be wise to limit phone use by children. "If you have a developing nervous system, it’s known to be more susceptible to environmental insults," he says, "So if phones did prove to be hazardous — which they haven’t yet—it would be sensible."
In 1998, Tattersall showed that radiation levels similar to those emitted by mobile phones could alter signals from brain cells in slices of rat brain, "What we’ve found is an effect, but we don’t know if it’s hazardous," he says.
Alan Preece of the University of Bristol, who found last year that microwaves increase reaction times in test subjects, agreed that children’s exposure would be greater. "There’s a lot less tissue in the way, and the skill is thinner, so children’s heads are considerably closer," he says.
Stewart’s report is likely to recommend that the current British safety standards on energy emissions from cell-phones should be cut to the level recommended by the International Commission on Non-Ionizing Radiation Protection, which is one-fifth of the current British limit. "The extra safety factor of five is somewhat arbitrary," says Michael Clark of the National Radiological Protection Board. "But we accept that it’s difficult for the UK to have different standards from an international body."
Which of the following can be the best candidate for the title of the passage?
选项
A、Brain Wave.
B、For Adults Only.
C、Catch Them Young.
D、The Answer in the Air.
答案
B
解析
本题题意是:“下面哪一个可以作为本段文字的标题?”A脑电波;B手机仅限成人:C从孩子抓起:D悬而未决定的方案。B更合适。
转载请注明原文地址:https://kaotiyun.com/show/7WU3777K
本试题收录于:
医学博士外语题库考研分类
0
医学博士外语
考研
相关试题推荐
Expertscautionthatnomatterwhichmethodpatientschoose,theymayneedtoweareyeglassesagainoneday—atleastforreadin
Shouldtheybeincludedinourlistofproblemsrequiringspecialtechniquesand______?
Osteoporosisusedtobecalled"thesilentdisease"becauseitsvictimsdidn’tknowtheyhadituntilitwastoolateandthey
Osteoporosisusedtobecalled"thesilentdisease"becauseitsvictimsdidn’tknowtheyhadituntilitwastoolateandthey
A、Reproducingthemselves.B、Stretchingandgrowing.C、Attachingthemselvestomuscles.D、Carryingmessages.D录音讲到神经细胞拥有long,stri
Convincingthepublictofollowhealthadvicecanbetoughandtime-consuming.Thismaybewhychangestohealthmessagesareof
Convincingthepublictofollowhealthadvicecanbetoughandtime-consuming.Thismaybewhychangestohealthmessagesareof
A、Thelicensinghourshavebeenextended.B、Oldpeoplearenotallowedtodrinkinpubs.C、Childrenarenotallowedyettodrink
About14,000peoplewillcontractHIVtoday.Andtomorrowandthedayafterthat,andeverydayfortheforeseeablefuture.That
About14,000peoplewillcontractHIVtoday.Andtomorrowandthedayafterthat,andeverydayfortheforeseeablefuture.That
随机试题
灰化分解法适用于分解()。
简述分别看管原则。
法对效率的促进作用体现在()
《中华人民共和国水污染防治法》规定,禁止在江河、湖泊、运河、渠道、水库()的滩地和岸坡堆放、存贮固体废弃物和其他污染物。
若旅游过程中有游客突然生病,通常情况下应由()和患者亲属将其送往医院。
我国传统农村合作医疗制度逐渐受到社会发展,特别是受()的影响,已不能很好地解决农民看病问题。
衡量社会进步的标准是()的发展水平。
下列关于中国哲学的历史陈述不正确的是:
在原有变量上通过一定的计算产生新变量的操作所用到的菜单是
ThepassagegivesanoverviewoftheeffectsofglobalwarmingontheUnitedStates.HighertemperaturesintheUnitedStatesh
最新回复
(
0
)