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
Imagine one day reading that you had been a subject in a risky science experiment without knowing it. At school, you had been fe
Imagine one day reading that you had been a subject in a risky science experiment without knowing it. At school, you had been fe
admin
2016-08-30
52
问题
Imagine one day reading that you had been a subject in a risky science experiment without knowing it. At school, you had been fed cereal laced with radioactive chemicals so scientists could learn more about the digestive system. Because the food was radioactive, scientists could easily trace its path through the body.
Scientists now know that exposure to large amount of radiation can cause cancer, a group of diseases in which bodily cells grow wildly out of control. Some people who were part of the radiation studies later developed cancer and blamed the radiation for causing the cancer. Others are worried the radiation will some day make them sick.
Some doctors say that, in many cases, such fears are unjustified because the radiation doses used in the experiments were too small to cause harm. They also say that since dangers of radiation were less well understood then than they are now, even researchers who used high doses of radiation didn’ t do anything wrong.
Some critics claim that no excuse is acceptable for not informing subjects about the nature of an experiment and giving them a chance to refuse to participate. Today, government rules require such informed agreement whenever a study uses people.
Which of the following is true according to the passage?
选项
A、Radioactive chemicals can cause bodily cells to grow wildly out of control.
B、When the danger of radiation had not been proved, high doses of radiation were acceptable.
C、Most cancers are caused by radiation.
D、Radioactive chemicals were once used to cure diseases with the digestive system.
答案
D
解析
本题为细节题。由定位句可知,在学校,你一直食用含有放射性化学物质的谷类食物,这样科学家可以了解消化系统的情况。因为食物是放射性的,科学家能很容易通过身体追踪到它的路径。也就是说放射性物质过去用于治疗消化系统相关疾病。故选D。
转载请注明原文地址:https://kaotiyun.com/show/B4RO777K
0
成人本科学位英语
相关试题推荐
BecausetheUnitedStatesisnotsurroundedbymanyothernations,someAmeri-canstendto______therestoftheworld.
Hospitaldoctorsdon’tgooutveryoftenastheirwork_____alltheirtime.
Sobadly______intheaccidentthathehadtobesenttohospitalfortreatment.
Waterisnecessaryforlifeandgoodhealth.Weoftenforgetthisfactwhenwethinka-bouttheotherbuildingblocksoflifesu
Thereweresome______flowersonthetablenearherbed.
Myfatherwavedmegood-byeandthebussetoff.Thepersonsitting【C1】______tomewasanengineergoingtoPeshawartoinspect
Beforesigningthecontract,Mr.Whitelookeditover______.
Inthe1960s,medicalresearchersThomasHolmesandRichardRahedevelopedachecklistofstressfulevents.Theyappreciatedthe
Liz:Geez!Yourroomislikeanice-box!Terri:【D1】______It’sjustcomfortable.Liz:Yeah,ifyou’reapenguin.Justlookatm
Hegotuptotheroof______aladder.
随机试题
函数y=x2在区间[1,3]上的平均值为()
划分混凝土强度等级的依据是()。
施工测量控制网的建立,可使区域内的施工测量统一部署,还可以()。
根据迁移内容的不同抽象与概括水平,迁移可以分为()。
马铃薯、草莓、芝麻和菜花等常见农产品,所对应的植物器官依次是()。
设总体X的概率密度为其中参数λ(λ>0)未知,X1,X2,…,Xn是来自总体X的简单随机样本.(Ⅰ)求参数λ的矩估计量;(Ⅱ)求参数λ的最大似然估计量.
下列有关数据库的描述,正确的是
朱真真是某培训学校的培训老师。最近,她准备开始为学员讲授《小企业会计准则》课程。在讲课之前,她需要制作培训课件,制作课件所需要的资料已经存放在“《小企业会计准则》培训素材文件.docx”中。请按下列要求帮助朱真真老师完成PPT课件的制作:(1)在考生文件
Employersfailto______.
A、Itisanoptiontosolvethewatercrisis.B、Itwouldbecheaperthanotheroptions.C、Itwouldcosttwiceorthreetimesmore
最新回复
(
0
)