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
2023-07-26
34
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:https://tihaiku.com/zcyy/2871979.html
相关试题推荐
Writeacompositiononmyviewonproducingnuclearweapons.Yourcompositionsh
StoppingSmoking:ASH’s15Tips—ActiononSmokingandHealth1
StoppingSmoking:ASH’s15Tips—ActiononSmokingandHealth1
StoppingSmoking:ASH’s15Tips—ActiononSmokingandHealth1
StoppingSmoking:ASH’s15Tips—ActiononSmokingandHealth1
StoppingSmoking:ASH’s15Tips—ActiononSmokingandHealth1
[originaltext]W:James,what’syouropinionaboutnuclearenergy?M:Nuclearen
[originaltext]Recentlytheterm"health"hascometohaveawidermeaningt
[originaltext]Recentlytheterm"health"hascometohaveawidermeaningt
[originaltext]Recentlytheterm"health"hascometohaveawidermeaningt
随机试题
Invain______togetintouchwiththeEmbassy.A、theytriedB、triedtheyC、did
HowCouldYourHobbyBetheKeytoFinancialSuccess?[A]Virtuallye
FourMinutesthatGetYouHiredBayStateralw
Directions:Forthispart,youareallowed30minutestowriteanadvertisem
关于砖砌体房屋结构中混凝土圈梁的说法,错误的是( )。A.屋盖及每层楼盖处的外
下列情形中,应实地采用解析法重新进行地籍测量,并利用变更地籍测量成果取代原成果的
汾酒的香型属于( )A.酱香型 B.米香型 C.窖香型 D.清香型
(1)白色轿车紧急刹车(2)红色轿车从东往西通过十字路口(3)红色轿车的保险杠
无论何种记账凭证都必须签名或盖章的人员不包括()。A.出纳人员 B.
某钢筋混凝土方形柱为偏心受拉构件,安全等级为二级,柱混凝土强度等级C30,截面尺
最新回复
(
0
)