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
In science, a theory is a reasonable explanation of observed events that are related. A theory often involves an imaginary model
In science, a theory is a reasonable explanation of observed events that are related. A theory often involves an imaginary model
admin
2012-02-27
81
问题
In science, a theory is a reasonable explanation of observed events that are related. A theory often involves an imaginary model that helps scientists picture the way an observed event could be produced. A good example of this is found in the kinetic (运动的) molecular theory, in which gases are pictured as being made up of many small particles that are in constant motion.
A useful theory, in addition to explaining past observations, helps to predict events that have not as yet been observed. After a theory has been publicized, scientists design experiments to test the theory. If observations confirm the scientists’ predictions, the theory is supported. If observations do not confirm the predictions, the scientists must search further. There may be a fault in the experiment, or the theory may have to be revised or rejected.
Science involves imagination and creative thinking as well as collecting information and performing experiments. Facts by themselves are not science. As the mathematician Jules Henri Poincare said: "Science is built with facts just as a house is built with bricks, but a collection of facts cannot be called science anymore than a pile of bricks can be called a house. "
Most scientists start an investigation by finding out what other scientists have learned about a particular problem. After known facts have been gathered, the scientist comes to the part of the investigation that requires considerable imagination. Possible solutions to the problem are formulated. These possible solutions are called hypotheses. In a way, any hypothesis is a leap into the unknown. It extends the scientist’s thinking beyond the known facts. The scientist plans experiments, performs calculations, and makes observations to test hypotheses. For without hypotheses, further investigation lacks purpose and direction. When hypotheses are confirmed, they are incorporated into theories.
Which of the following statements is supported by the passage?
选项
A、A scientist’s most difficult task is testing hypotheses.
B、It is better to revise a hypothesis than to reject it.
C、Theories are simply imaginary models of past events.
D、A good scientist needs to be creative.
答案
D
解析
本题是推理题。文中第三段说Science involves imagination and creative thinking,可见一个优秀的科学家应该creative,并且下文阐述的想象和假定的重要性也说明科学家需要富有创造力,所以D选项是正确答案。A、B两选项原文未提及。C选项与原文内容不符,原文第一段就说理论是对过去观察到的相关事件的合理解释。
转载请注明原文地址:https://kaotiyun.com/show/UiHO777K
0
在职攻硕英语联考
相关试题推荐
(浙江大学2008年试题)Sincetheearly1930s,Swissbankshadpridedthemselvesontheirsystemofbankingsecrecyandnumberedaccou
Thefollowingqualificationsareessentialforthepost;anhonorsdegreeinEnglish,______inshorthandandtypewritingandsome
With______exceptions,theformerpresidentdoesnotappearinpublicnow.
AlltherecentnewsonAIDSisbad.ThedeathofRockHudson【C1】______publicconcernaboutthe【C2】______almosttothepointofp
Thechairmanofthecompanysaidthatnewtechniqueshad______improvedtheirproductionefficiency.
Fiftyvolunteerswerealphabeticallydividedintotwoequalgroups,GroupAtoparticipate【C1】______a7-weekexerciseprogram,a
Thekitchenwassmalland______sothatthedisabledwomancouldreacheverythingwithoutdifficulty.
Adolescentsaretakinglongertobecomefullyproductivemembersofsociety,ReedLarson,professorofhumandevelopment,Univer
Envyhasbecomeadrivewheelofourmodernworld.Itisthepassionthatgovernsoureconomiclife.Moderncapitalismrelieson
Everynightshelistenedtoherfathergoingaroundthehouse,lockingthedoorsandwindows.Shelistened;thebackdoorclosed
随机试题
处方日剂量是指
关于泵房设备的混凝土基础及闸槽质量验收主控项目的说法,正确的有()。
设立在我国境内的某重型机械生产企业,由未在中国境内设立机构、场所的非居民企业持股25%,2016年全年主营业务收入7500万元,其他业务收入2300万元,营业外收入1200万元。主营业务成本6000万元,其他业务成本1300万元,营业外支出800万元,营业
在Excel2003中,工作表中最大的单元地址为_______,最小的单元地址为________。()
宪法是政治斗争,特别是阶级斗争的产物,它随着阶级的产生而产生,也必将随着阶级的消灭而最终消亡。()
法律的效力高于行政法规、地方性法规、规章。行政法规的效力高于地方性法规、规章。()
诺曼征服
Manyyoungpeoplegotouniversitywithoutclearideaofwhattheyaregoingtodoafterwards.Ifastudentgoestoauniversity
Youmustleavethattopicforthetimebeingand______tothenextsubject.
Whichcolumnofthebarchartrepresentsthefiguresquoted?Buyspecialorthopaedicchairs
最新回复
(
0
)