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
75
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
—Howdoyoudealwiththedisagreementbetweenthecompanyandthecustomers?—Thekey______theproblemistomeetthedemand
Onthefirstdayofschooloneofmyclassmatesbeganatalkwithmethatchangedmylife.Shesaid,"Hi,handsome.MynameisR
Forthispart,youareallowed30minutestowriteanemailtoyourbossbasedonthefollowinginstructionsgiveninChinese.P
Myfatherwavedmegood-byeandthebussetoff.Thepersonsitting【C1】______tomewasanengineergoingtoPeshawartoinspect
Isupposethatthemostbasicandpowerfulwaytoconnecttoanotherpersonistolisten.Justlisten.Perhapsthemostimportan
Isupposethatthemostbasicandpowerfulwaytoconnecttoanotherpersonistolisten.Justlisten.Perhapsthemostimportan
W:Boy,howquicklytechnologychanges!Somanypeoplehaveacomputerintheirhomenowadays.M:______
Robert:Mary,I’dlikeyoutomeetmynewneighbor,Tom.Mary:Hello,Tom.It’snicetomeetyou.Tom:______
Liz:Geez!Yourroomislikeanice-box!Terri:【D1】______It’sjustcomfortable.Liz:Yeah,ifyou’reapenguin.Justlookatm
Hehadbeen______togiveupmuchofhistimetohousework.
随机试题
封闭式基金的存续时间不得少于()年。
垄断与竞争并存的原因是()
下个月将有来自60个国家的2000多名青少年来本市参加“Robocup2007”(2007世界机器人足球赛)。校学生会计划成立一个120人的志愿者(volunteer)团队。请你写一篇征求志愿者的通知。内容包括;1.征求志愿者的原因:
下列哪项不是妊娠的必备条件
采用高低浓度对照法检查氢化可的松中其他甾体时,样品液为3mg/ml的氯仿-甲醇(9:1)溶液;将样品液用同样溶剂稀释50倍后做为对照液。样品液和对照液各点5μl按薄层色谱法试验。其限度应为
2007年8月,个体工商户王某将其经营的时装店交给其朋友齐某经营,齐某在经营过程中,借用丽人时装公司的合同专用章,与华美时装厂签订了代理销售其时装的合同。至2008年6月,齐某共拖欠华美时装厂时装款120万元。华美时装厂多次催要,但齐某均以该时装店的业主是
下列各项中,申请人最可能获得个人汽车贷款的情况是()。
《治安管理处罚法》第十六条规定,有两种以上违反治安管理行为的,行政拘留处罚合并执行的,最长不超过()日。
计算110.12+1210.32+1220.42+1260.82的值为()。
数据流图中带有箭头的线段表示的是()。
最新回复
(
0
)