What makes a person a scientist?Does he have ways or tools of learning that are different from those of others?The answer is“no”.It is not the tools a scientist uses but how he uses these tools that make him a scientist.You will probably agree that knowing how to use a power is important to a carpenter.You will probably agree,too,that knowing how to investigate,how to discover information,is important to everyone.The scientist,however,goes one step further,he must be sure that he has a reasonable answer to his questions and that his answer can be confirmed by other persons.He also works to fit the answer he gets to many questions into a large set of ideas about how the world works.
The scientist’s knowledge must be exact.There is no room for half right or right just half the time.He must be as nearly right as the conditions permit.What works under one set of conditions at one time must work under the same conditions at other times.If the conditions are different,any changes the scientist observes in a demonstration must be explained by the changes in the conditions.This is one reason that investigations are important in science.Albert Einstein,who developed the theory of relativity,arrived at this theory through mathematics.The accuracy of this mathematics was later tested through investigations,Einstein’s ideas were shown to be correct.A scientist uses many tools for measurements.Then the measurements are used to make mathematical calculations that may test his investigations.
11.What makes a scientist according to the passage?根据这篇文章的观点科学家是如何来的？
A.The tools he uses.B.The way he uses his tools.他使用工具的方法
C.His way of learning.D.The various tools he uses.
12.“The scientist,however,goes one step further…”.The author says this to show _______.
A.the importance of information
B.the importance of thinking
C.the difference between scientists and ordinary people科学家与普通人的区别
D.the difference between carpenters and people with other jobs
13.A sound scientific theory should be one that _______.一项伟大的科学理论应该是怎么样的？
A.works not only under one set of conditions at one time,but also under the same conditions at other times
B.does not allow any changes even under different conditions
C.can be used for many purposes
D.leave no room for improvement
14.The author quotes the case of Albert Einstein to illustrate _______.作者引用爱因斯坦的例子是为了证明什么？
A.that measurements are keys to success in science
B.that accuracy of mathematics
C.that the investigations are important in science调查研究在科学领域十分重要。
D.that the mathematical calculations may test his investigations
15.What is the main idea of the passage?这篇文章的中心意思是什么？
A.The theory of relativity.
B.Exactness is the core of science.
C.Scientists are different from ordinary people.
D.Exactness and ways of using tools are the keys to the making of a scientist.