首页
登录
职称英语
Nuclear power is dangerous to health, safety and even life itself. The dange
Nuclear power is dangerous to health, safety and even life itself. The dange
游客
2024-02-27
51
管理
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. [br] What is the author’s main purpose in writing this passage?
选项
A、Emphasizing the importance of protection from radiation.
B、Solving the mystery about radiation.
C、Discussing the cause of cancer.
D、Introducing the nuclear power.
答案
A
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3488239.html
相关试题推荐
Thebiggestsafetythreatfacingairlinestodaymaynotbeaterroristwith
Thebiggestsafetythreatfacingairlinestodaymaynotbeaterroristwith
Thebiggestsafetythreatfacingairlinestodaymaynotbeaterroristwith
Thebiggestsafetythreatfacingairlinestodaymaynotbeaterroristwith
Thebiggestsafetythreatfacingairlinestodaymaynotbeaterroristwith
Thebiggestsafetythreatfacingairlinestodaymaynotbeaterroristwith
Thebiggestsafetythreatfacingairlinestodaymaynotbeaterroristwith
____________(众所周知),abalanceddietandexercisekeeponefitandhealthy.Asis
Wantaglimpseofthefutureofhealthcare?Takealookatthewaythevari
Wantaglimpseofthefutureofhealthcare?Takealookatthewaythevari
随机试题
PartⅡReadingComprehension(SkimmingandScanning)Directions:Inthispartyo
Thesqueezeonuniversityplacesisgettingevertighter.Butwhatdoesall
Karaokemayneverbethesame,thankstoresearchbeingpresentedinNashvil
(2020年真题)根据基金的归因方式分类,相对于业绩比较基准进行分析的是(
房地产经纪信息的特征有()。A:增值性 B:多维性 C:负外部性 D:积
下列哪项不属于胃癌根治术后的早期并发症A.胃出血 B.吻合口瘘 C.倾倒综合
现场操作通过电脑钥匙实现,操作完毕后应将电脑钥匙中当前状态信息返回给防误装置主机
期货交易所的职责包括()。 A.提供交易场所、设施和服务B.保证合约的履行
“十一五”时期,加快建设我国社会信用体系应以()为重点。 A.完善信贷、纳税
关于单层厂房的说法,正确的是()A.单层厂房分墙体承重和骨架承重两种结构 B.
最新回复
(
0
)