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【单选题】
Scientific knowledge is based on verifiable evidence. By evidence we mean concrete factual observations which other observers can see, weigh, measure, count, or check for accuracy. We may think the definition too obvious to mention most of us have some awareness of the scientific method. Yet only a few centuries ago medieval scholars held long debates on how many teeth a horse had, without bothering to look into a horse's mouth to count them. At this point we raise the troublesome methodological question, 'What is a fact?' While the word looks deceptively simple, it is not easy to distinguish a fact from a widely shared illusion. Suppose we define a fact as a descriptive Statement upon which all qualified observers are in agreement. By this definition, medieval ghosts were a fact, since all medieval observers agreed that ghosts were real. There is, therefore, no way to be sure that a fact is an accurate description and not a mistaken impression. Research would be easier if facts were dependable, unshakable certainties. Since they are not, the best we can do is to recognize that a fact is a descriptive statement of reality which scientists, after careful examination and cross-checking, agree in believing to be accurate. Since science is based on verifiable evidence, science can deal only with questions about which verifiable evidence can be found. Questions like 'Is there a God?' 'What is the purpose and destiny of man?' or 'What makes a thing beautiful?' are not scientific questions because they can not be treated factually. Such questions may be terribly important, but the scientific method has not tools for handling them. Scientists can study human beliefs about God, or man's destiny, or beauty, or anything else, and they may study the personal and social consequences of such beliefs but these are studies of human behavior, with no attempt to settle the truth or error of the beliefs themselves. Science then does not have answers for everything, and many important questions are not scientific questions. The scientific method is our most reliable source of factual knowledge about human behavior. and the natural universe, but science with its dependence upon verifiable factual evidence cannot answer questions about value, or esthetics, or purpose and ultimate meaning, or supernatural phenomena. Answers to such questions must be sought in philosophy, metaphysics, or religion. Each scientific conclusion represents the most reasonable interpretation of all the available evidence—but new evidence may appear tomorrow. Therefore science has no absolute truths. An absolute truth is one which will hold true for all times, places, or circumstances. All scientific truth is tentative, subject to revision in the light of new evidence. Some scientific conclusions (e.g., that the earth is a spheroid or that innate drives are culturally conditioned) are based upon such a large and consistent body of evidence that scientists doubt that they will ever be overturned by new evidence. Yet the scientific method requires that all conclusions be open to reexamination whenever new evidence is found to challenge them. The central idea of the passage is
A.
scientific knowledge is based on verifiable evidence.
B.
science does not have answers for verifiable evidence.
C.
science has no absolute truths.
D.
the scientific method requires that all conclusions be open to reexamination whenever new evidence is found to challenge them.
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举一反三
【单选题】色泽金黄,茸毛齐全描写的是
A.
草菇
B.
猴头蘑
C.
金针菇
D.
木耳
【简答题】解释以下vi命令:d4B
【单选题】我国审计正式命名的标志是( )审计院的建立
A.
秦朝
B.
宋朝
C.
汉朝
D.
唐朝
【判断题】民族精神和时代精神相互交融,深深熔铸在民族的生命力、创造力和凝聚力之中。( )
A.
正确
B.
错误
【多选题】下列各项中属于会计政策变更的有()
A.
按心得控制定义调查合并财务报表合并范围
B.
会计准则修订要求将不具有控制、共同控制和重大影响的权益性投资由长期股权投资转为可供出售金融资产
C.
公允价值计量使用的估值技术由市场法变更为收益法
D.
因处置部分股权投资丧失了对子公司的控制导致长期股权投资的后续计量方法由成本法转变为权益法
【单选题】门窗安装连接铁件1.5厚、宽15厚镀锌钢板,固定点距角、中横框、中竖框15-20cm中间距不超( ),固定点距结构边缘≥50
A.
400
B.
600
C.
800
D.
500
【单选题】当今世界激烈的综合国力竞争,不仅包括经济实力、科技实力、国防实力等方面的竞争,也包括文化方面的竞争。文化的力量,深深熔铸在民族的生命力、创造力和凝聚力之中,成为综合国力的重要标志。这主要揭示了()
A.
经济在综合国力竞争中的地位
B.
综合国力在国际竞争中的地位
C.
科技在增强经济实力中的地位
D.
文化在综合国力竞争中的地位
【单选题】( )洞穴众多且景观优美,素有“无山不洞,无洞不奇”之称 P125
A.
云南
B.
广东
C.
广西
D.
湖北
【单选题】为防止黑客的入侵,下列做法中有效的是( )
A.
关紧机房的门窗
B.
在机房安装电子报警装置
C.
定期整理磁盘碎片
D.
在计算机中安装防火墙
【简答题】词性:n.;含义:下午,午后;单词:___________
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