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
Commuter trains are often stuffy and crowded, and they frequently fail to run on time. As if that were not bad enough, Tsuyoshi
Commuter trains are often stuffy and crowded, and they frequently fail to run on time. As if that were not bad enough, Tsuyoshi
admin
2013-05-04
95
问题
Commuter trains are often stuffy and crowded, and they frequently fail to run on time. As if that were not bad enough, Tsuyoshi Hondou, a physicist at Tohoku University in Japan, published a paper in 2002 that gave commuters【C1】______ another mason to feel uncomfortable. Dr Hondou examined mobilephone usage in enclosed spaces such as railway carriages, buses and lifts, all of which are, in 【C2】______ , metal boxes. His model predicted that a large number of passengers crowded together, all blathering, sending text messages, or browsing the web on their phones, could produce levels of electromagnetic radiation that【C3】______ international safety standards. That is because the radio waves produced by each phone are reflected off the metal walls of the carriage, bus or lift. Enough radiation escapes to allow the phone to communicate with the network, but the rest bathes the inside of the carriage with bouncing microwaves.
This sounds worrying. But maybe it isn’t after all. In a paper published recently in Applied Physics Letters, Jaime Ferret and Lucas Fernandez Seivane from the University of Oviedo in Spain along with colleagues from the Polytechnic University of Madrid and Telefonica Moviles, a Spanish mobile operator【C4】______ Dr Hondou’s findings. They conclude that the level of radiation is safe after all.
The【C5】______ addition to the new research is the effect of the passengers themselves. While each phone produces radiation that bounces around the car, the passengers absorb some of it, which has the effect of reducing the overall intensity, just as the presence of an audience changes the acoustics of a concert hall,【C6】______ it less reverberant. Dr Hondou’s model, in short, was valid only in the case of a single passenger sitting in an empty carriage with an active mobile phone on every seat.
While Dr Hondou acknowledged this in his original paper, he did not【C7】______ calculate the effect that leaving out the other passengers would have on the radiation level. As a result, say the authors of the new paper, he significantly overestimated the level of electromagnetic radiation. When one is sitting on a train, Dr Ferrer and his colleagues found, the most important sources of radiation are one’s own phone, and those of one’s 【C8】______ neighbours. The radiation from these sources far exceeds that from other phones or from waves bouncing around the carriage. And all these sources together produce a level of radiation within the bounds 【C9】______ by the ICNIRP, the international body that regulates such matters.
People concerned about the effects of mobile phone radiation are unlikely to take much comfort from Dr Ferrer’s results. They worry that even small amounts of microwave radiation within the ICNIRP’s limits may have adverse health effects. The evidence so far is ambiguous, 【C10】______ and sparse. Indeed, Dr Ferret says he was surprised at how little research has been done in this area.
A) exceed I) recently
B) quite J) specifically
C) consistent K) profit
D) inconsistent L) defined
E) dispute M) key
F) yet N) essence
G) represent O) immediate
H) making
【C10】
选项
答案
D
解析
此处需要一个表否定意义的形容词,inconsistent意为“不一致的”。
转载请注明原文地址:https://kaotiyun.com/show/oJB7777K
0
大学英语六级
相关试题推荐
A、Theprivatehousesonthelistarefullalready.B、Itprovidesthelatestinformationabouttheprivatehouses.C、Mostofthe
A、Thewomanwillthrowapartyforherself.B、TheyaregoingtohaveapartyonSaturdayevening.C、Peopleattendingthepartyn
HowtoAffordCollegeNowIt’saclassicgoodnews/badnewsmoment:thatfatenvelopeinthemailboxsignifiesthatyourc
______(学生不喜欢传统课堂的原因之一)isthatstudentsareseldomallowedtoexpresstheirideasinatraditionalclassroom.
Oneofthegreatestconcernsparentshavewhenfacinganinternationalmoveis,"Whatschoolwillbeavailabletomychild?Will
Oneofthegreatestconcernsparentshavewhenfacinganinternationalmoveis,"Whatschoolwillbeavailabletomychild?Will
CrowdsourcingaBetterWorldThecrowdsourcingconcept—collectingcontributionsfrommanyindividualstoachieveagoal—was
A、Thewomancanpayeitherperson.B、Thewomanshouldbuytheonesheprefers.C、Helikesthesameonethatthewomandoes.D、He
Manyprivateinstitutionsofhighereducationaroundthecountryareindanger.Notallwillbesaved,andperhapsnotall【B1】__
A、Wearingarmweightswhileyouareswimming.B、Joggingvigorouslyinoneplaceforalongtime.C、Usingbicyclesthatrequirey
随机试题
数据独立性是数据库技术的重要特点之一。所谓数据独立性是指()。
对该病人的饮食指导,不恰当的是该病人用糖皮质激素治疗后病情缓解出院,其健康指导的主要内容不包括
背景东南机电安装工程公司中标某商业大厦的全部机电安装工程。合同规定,工程量清单计价采用综合单价计价。该公司项目部计算该工程相关费用为:分部分项工程工程量清单计价2200万元,措施项目清单计价70.5万元,其他项目清单计价120万元,规费90万元,
账套号是区别不同账套的唯一标识。()
甲工业食业期未“原材料”科目余额为300万元,“生产成本”科目余额为70万元,“材料成本差异”科日贷方余额为5万元,“库存商品”科目余额为150万元,“工程物资”科目余额为200厅元。则甲工业企业期末资产负债表中“存货”项目的金额为()万元。
下列属于杜威的教育思想的是()。
平视是一种严肃的人生态度,是不带色彩的客观,是超越功利的公正,是抛却杂念的单纯,但并非人人都可做到。平视,需要心的正直与坦荡;平视,需要情的_______;平视,需要识的_______;平视,需要度的_______。填入画横线部分最恰当的一项是:
王某擅自使用机动渔船渡客。渔船行驶过程中,被某港航监督站的执法人员发现,当场对王某作出罚款50元的行政处罚,并立即收缴了该罚款。关于缴纳罚款,下列哪一做法是正确的?()
李某是税务局干部,他向县检察院举报了税务局领导张某在干部调整中收受钱物的行为,但长期未见回应。李某几经努力才弄清是检察院的王某把举报信私下扣住并给了张某。于是他又向县人大、市检察院举报王某的行为。李某的举报行为属于()。
以下选项中,当x为大于1的奇数时,值为0的表达式是
最新回复
(
0
)