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 is dangerous to health, safety and even life itself. The danger from nuclear power can be summed up in one word: r
Nuclear power is dangerous to health, safety and even life itself. The danger from nuclear power can be summed up in one word: r
admin
2010-05-26
45
问题
Nuclear power is dangerous to health, safety and even life itself. The danger from nuclear power 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 can’t be seen or heard, or touched or tasted, even though it may be all around us. There are other things like that. For example, radio waves are all around us but we can’t detect them, sense them, without a radio receiver. Similarly, we can’t sense radioactivity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things.
At very high levels, radiation can kill an animal or human being outright (全部地) by killing masses of cells in vital organs. But even the lowest level of radiation can do serious damage. There is no level of radiation that is completely safe. If the radiation does not hit anything important, the damage may not be significant. This is the case when only a few cells 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 irradiated and feel fine, then die of cancer five, ten, or twenty years later as a result. Or a child can be born weak or liable to serious illness as a result of radiation absorbed by its grandparents. Radiation can hurt us. We must know the truth.
Radiation can hurt us in that it can ______.
选项
A、affect the healthy growth of our offspring
B、damage cells which may grow into cancer years later
C、kill large numbers of cells in main organs so as to cause death immediately
D、all of the above
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/JtV7777K
0
大学英语四级
相关试题推荐
Personalexperiences,culture,religion,andageinfluenceaperson’s【S1】______aboutdeath.Manypeoplefeardeath.Othersref
OrganicFoodOrganicfarmingwasamongthefastestgrowingsegmentsofU.S.agricultureduringthe1990s.Thevalueofretai
GeorgeDanielslivesinLondon.Heisawatchmaker.Hisworkcontinuesthe【B1】______oftheEnglishwatchmakersofthe18thand
A、Becausethecompanydoesnothavetopayasmanyclaimsascompetitors.B、Becausethecompanyrentnoshopsandpaynocommiss
Businessandgovernmentleadersalsoconsidertheinflationratetobeanimportantgeneralindicator.Inflationisaperiodof
A、Atwork.B、Atabank.C、Atarestaurant.D、Atanapartmentbuilding.B
Thestandardoflivingofanycountrymeanstheaverageperson’sshareofthegoodsandserviceswhichthecountryproduces.Ac
WilliamAppleton,authorofarecentbookentitledFathersandDaughters,believesthatitisawoman’srelationshipwithherfa
WilliamAppleton,authorofarecentbookentitledFathersandDaughters,believesthatitisawoman’srelationshipwithherfa
A、Threeweeks.B、Onemonth.C、Threemonths.D、Overayear.C
随机试题
数据加密是指要把保护的数据进行编码后形成______________。
A.急性粟粒性肺结核B.急性空洞型肺结核C.局灶型肺结核D.千酪性肺炎(2009年)属于非活动性肺结核的是
位于某镇工业区中的日化厂,受托为甲市一家化妆品公司加工化妆品一批,委托方提供的原材料不含税金额66万元,加工结束向委托方开具专用发票收取加工费和辅助材料费的含税金额共计35.1万元;该日化工厂无同类化妆品市场价格。化妆品公司收回化妆品后以150万元的价值出
成语“爱屋及乌”的含义是“爱人者,兼屋上之乌”,它体现了()
根据《中华人民共和国出境入境管理办法》规定,旅游团队出境前已经确定分团入境的,组团社应当事先向()备案。
某乡一所初中进行危房改造,乡政府公开向学生家长集资。由于进度缓慢,乡政府便向学校下了一道命令,凡是缴了集资的家庭,其子女可以在学校正常上课,否则要让学生停课回家催家长缴款。结果,该校50多人的教学班只剩下10多名学生,教师无法正常上课,只好停课一周。
分析下面的谱例。要求:判断调式调性。
图像文件的类型有多种,下列哪一种图像文件可以具有动画效果?()
通用异步收发器(UART)由【61】器、接收器、控制单元以及【62】发生器等构成。
下列与表中字段相关的属性中,通过设置可以提高查询速度的属性是
最新回复
(
0
)