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The scientist's work was based on______.
A．occasional observations
B．systematic observations
C．observations of several nests
D．observations of an undisturbed nest
答案
更多“The scientist's work was based on______.A．occasional observationsB．systematic observations”相关的问题
第1题
A．made for
B．set out
C．took off
D．turned up
第2题
They could see there was something wrong with both watches. They observed them for several hours before speaking to each other. They both silently found that the German watch was losing 60 minutes and the Japanese are doubled that.
The scientist with the Japanese watch then slowly raised his head and said," Both watch are out of work, but my watch is right more often than yours, so it's better. "The scientist German watch went home without saying a word.
The two scientists were quarrelling at the beginning of the story, because __________.
A．the Japanese watch was better
B．the German watch was better
C．each of them thought his own watch was better than the other's
D．both the watches were wrong
第3题
听力原文： Robert Goddard, American physicist and rocket scientist, once said that the dream of yesterday is the hope of today and the reality of tomorrow. It was his scientific work that gave hope to many of our dreams about space and then turned them into reality.
Robert Goddard's many studies and tests in the early 1900s led to the first rocket. Then he developed rockets with more than one engine. Each engine pushed the rocket higher and higher out of Earth's atmosphere. His ideas are still used today.So, in a way, every rocket that flies today is a Goddard rocket.
Robert Goddard was far ahead of his time. He developed and flew many rockets that got their power from solid fuels. Then, in 1925, he made and tested the first rocket engine using a soft chemical fuel. In 1926, he successfully fired the world's first liquid-fuel rocket.
Robert Goddard died in 1945 of cancer. He was sixty-three years old. He received a special honor many years after his death. In 1959, the United States established the Goddard Space Flight Center near Washington, D.C. The Goddard Space Flight Center honors the man whose work proved that machines could travel out of Earth's atmosphere, into space.
(23)
A．An airplane designer.
B．A science fiction writer.
C．The inventor of rockets.
D．A famous theoretical physicist.
第4题
A.have worked on
B.have been working on
C.be working on
D.work on
第5题
A．insight
B．discovery
C．concept
D．conviction
第6题
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.
1.What makes a scientist according to the passage?（）
A.The tools he uses.
B.The way he uses his tools.
C.His ways of learning.
D.The various tools he uses.
2.The underlined part in the passage shows（）.
A.the importance of information
B.the importance of thinking
C.the difference between scientists and ordinary people
D.the difference between carpenters and people with other jobs
3.A sound scientific theory should be one that （）.
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
4.The author quotes the case of Albert Einstein to illustrate（）.
A.that measurements are keys to success m science
B.that accuracy of mathematics
C.that investigations are important science
D.that the mathematical calculations may test his investigations
5.What is the main idea of the passage?（）
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.
第7题
The example given in the third paragraph illustrates how______.
A．applied scientist direct the work of the pure scientist
B．applied science suggests problems for the basic scientist
C．pure scientist operates independently of applied scientist
D．pure scientist plays a more important role than applied scientist
第8题
听力原文： Thomas Edison is a well known American inventor. He was taught by his mother when he was a child. Later he learned things by himself by reading and experimenting. He built a lab for himself to work in, and he worked very hard in his sixty years of scientific activities. He made over a thousand inventions. Few inventors in the world have had such great success.
Edison's first invention was made in 1868. He was then a telegraph operator. He wished to work out a new method to improve the old telegraph system because it was impossible at that time for the system to send more than one message along the same line at the same time. He read all the works of Faraday, another great scientist, before starting his invention. Sometimes he didn't go to bed and didn't even stop to eat. He thought he had very much to do and there was no time to lose. Days and nights he was reading and reading. After he read through Faraday's writings, he began his experiments. A few months later he succeeded in building a double transmitter and improved the old telegraph System.
(30)
A．He went to a famous school.
B．He was taught by his mother.
C．His parents employed a good teacher to teach him.
D．He was taught by his father.
第9题
M: Well, it looks just like an ordinary plane, really. It’s about the same size as a plane, and it can carry about 50 passengers.
W: But it doesn’t act like an ordinary plane, does it？
M: No, it’s much faster. For example, you could fly from London to Beijing in only 30 minutes.
W: My goodness! And how does it work？
M: Well, shortly after taking off, the plane leaves the earth’s atmosphere and goes into orbit around the earth until it returns to the ground.
W: So it’s really a kind of space rocket.
M: Not really, no, for two reasons. First, a space rocket can only be used once, but this space plane can be used for many times. Second, while the plane is traveling through the atmosphere, the pilot can fly it just like an ordinary plane.
W: It sounds very exciting.
(20)
A．A satellite.
B．An ordinary plane.
C．A space plane.
D．A space rocket.
第10题
What makes a person a scientist？ (是什么使一个人成为科学家？) 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 makes 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 answers 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 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 his mathematics was later tested through investigations, and 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. nextItem What makes a scientist according to the passage？ ________ A.The tools he uses.
B.The way he uses his tools.
C.His ways of learning.
D.The various tools he uses.
What is the main idea of the passage？ ________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
The underlined part in the passage shows_______.A.the importance of information
B.the importance of thinking
C.the difference between scientists and ordinary people
D.the difference between carpenters and people with other jobs
A sound scientific theory should be one that _________.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.leaves no room for improvement
The author quotes the case of Albert Einstein to illustrate __________.A.that measurements are keys to success in science
B.that accuracy of mathematics
C.that investigations are important in science
D.that the mathematical calculations may test his investigations
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