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
Nuclear power’s danger to health, safety, and even to life itself can be summed up in one word: radiation. Nuclear radiation
Nuclear power’s danger to health, safety, and even to life itself can be summed up in one word: radiation. Nuclear radiation
admin
2010-08-21
74
问题
Nuclear power’s danger to health, safety, and even to life itself can be summed up in one word: radiation.
Nuclear radiation has a certain mystery about it, partly because it cannot be detected by human senses. It cannot be seen or heard, or touched or tasted, even though it is all around us. There are other things like that. Radio waves are all around us but we cannot detect them, sense them, without a radio receiver. Similarly, we cannot sense radioactivity without a radio detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other things.
At very high levels, radiation can kill an animal or human being outfight by killing masses of cells in vital organs. But even the lowest levels can do serious damage. There is no level of radiation that is completely safe. If the radiation does not hurt anything important, the damage may not be significant. This is the case when only a few are hit, and if they are killed outright, your body will replace the dead cells with healthy ones. But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They reproduce themselves in a deformed way. They can grow into cancer. Sometimes this does not show up for many years.
This is another reason for some of the mystery about nuclear radiation. Serious damage can be done without the victim being aware at the time that damage has occurred. A person can be radiated and feel fine, then die of cancer five, ten or twenty years later as a result.
Radiation can hurt us. We must know the troth.
The second paragraph tells us that ______.
选项
A、nuclear radiation is invisible but harmful
B、nuclear radiation is detected only by a receiver
C、radio waves are harmless
D、radio waves are mysterious
答案
A
解析
这是一篇关于核辐射特点及其危害的文章。通过阅读第二段,我们不难看出,该段通过比较核辐射和普通的电波,说明核辐射具有看不见但对人体有害的特点。据此,我们可以判断得知A项正确。
转载请注明原文地址:https://kaotiyun.com/show/hS7K777K
0
大学英语六级
相关试题推荐
A、Thewomanworksforaroofingcompany.B、Themanisafraidofheavystorms.C、Thewoman’sbedroomroofisleaking.D、Theman’s
Britainwasawealthycountry.Therewereafewveryrichpeoplewhoreceivedmoneyfromlandor【B1】______,anddidnotneedt
Ifyouhavegoneonadietandreachedyourgoal,chancesaregoodthatwhenyoustopdietingyouwillregainalltheweightyou
Imaginethis:youaresittinginyourcarwhilewatchingamovie,youcanchoosetositinwhateverawaythatmakesyoufeelco
Itisonlyrightthatthestarsshouldbepaidinthisway.Don’tthetopmeninindustryearn【B1】______salariesfortheservic
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowinganaspirintabletoreatingachickensandwich--theycana
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowinganaspirintabletoreatingachickensandwich--theycana
PassageOneTherearemanycommonlyheldbeliefsaboutglassesandeyesightthatarenotprovenfacts.Forinstance,somepe
Whenyoustarttalkingaboutgoodandhadmannersyouimmediatelystartmeetingdifficulties.Manypeoplejustcannotagreewhat
随机试题
Guy:WhichjobdoyouthinkIshouldtake:theteacher’sjobortheengineer’sjob?Kay:______
急性上消化道出血最常见的病因是
《伤寒六书》中的柴葛解肌汤和《医学心悟》中的柴葛解肌汤均不含有的药物是()。
远离污染环境、积极应对各种紧张生活事件属于
医疗机构的执业规则是()
对被告适用拘传应具备以下条件( )。
隧道水密型防水技术主要是以排为主,以防为辅。()
根据《砌体工程施工质量验收规范》,砌体工程不得在()设置脚手眼。
装载非法定检验检疫货物的集装箱,入境报检时应填写《出入境集装箱报检单》。( )
某单位有男员工15人,女员工10人,周一到周日每天晚上安排一名男员工值班,15人轮流;周六、周日白天每天安排一名女员工值班,10人轮流。A男和B女恰好均安排在7月5日值班,若不考虑调休,则下一次两人被安排在同一天值班是()。
最新回复
(
0
)