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 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(调查),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 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 his 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. 51.What makes a scientist according to the passage? A. The tools he uses. B. His ways of learning. C. The way he uses his tools. D. The various tools he use 52.“The scientist, however, goes one step further,” the author says this to show 。 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. 53. A sound scientific theory should be one that . A. does not only work under one set of conditions at one time, but also works under the same conditions at other times B. leaves no room for improvement C. does not allow any change even under different conditions D. can be used for many purposes 54. What is the main idea of the passage? Scientists are different from ordinary people. The theory of relativity. Exactness is the core（核心）of science. Exactness and way of using tools are the keys to the making of a scientist.

词汇与结构 ( 单选题 ) 本 大题共包含 15 小题每小题 2 分 共计 30 分 阅读句子从 A B C 三个选项中选择一个能填入空白处的最佳选项 10 . Kate _ if she can use Tom s bike A . knows B . wanders C . wonders

大 小题4分,共计20分。阅读短文,判断句子正误,正确选-|||-hastner was a German writer and poet.He started-|||-At the end of his studies there,he received stuicy onlosophy at the-|||-eipzig.He moved to Berlin where he spent his n-|||-k.Emil and the Detectives.It sold millions of copies and --|||-so popular because it was unusual.In contrast to most C-|||-in and not in a fairy-tale world.The story of Emil and his frie-|||-and was also adapted for the theatre.-|||-As for stones about girls,he wrote Lottie and Lisa after World War II.The stor-|||-meet at a summer camp,became an instant success and has also been turned into films who accidentally-|||-Kastner's books were illustrated by Walter Trier,a famous artist,who also introduced a new style for the pictures.His-|||-drawings added a modern touch to Kastner's novels. It is therefore not surprising that the books they produced are still-|||-enormously popular. Kastner wrote his last story in 1969.-|||-Emil Erich Kastner's first children's book is Emil and the Detectives.-|||-T-|||-[判断题] Emil Erich Kastner wrote Lottie and Lisa before World War II.

It's a little inconvenient because my mind didn't_________80 but my body did,and I find that sometimes my mind follows my body too!A. changeB. alterC. turn

Packaging is an important form of advertising. A package can sometimes motivate someone to buy a product. For example, a small child might ask for a breakfast food that comes in a box with a picture of a TV character. The child is more interested in the picture than in the breakfast food. Pictures for children to color or cut out, games printed on a package, or small gifts inside a box also motivate many children to buy products—or to ask their parents for them. Some packages suggest that a buyer will get something for nothing. Food products sold in reusable containers are examples of this. Although a similar product in a plain container might cost less, people often prefer to buy the product in a reusable glass or dish, because they believe the container is free. However, the cost of the container is added to the cost of the product. The size of a package also motivates a buyer. Maybe the package has ''Economy Size'' or ''Family Size'' printed on it. This suggests that the large size has the most products for the least money. But that is not always true. A buyer has to know how the product is sold and the price of the basic unit. The information on the package should provide some answers. But the important thing for any buyer to remember is that a package is often an advertisement. The words and pictures do not tell the whole story. Only the product inside can do that. 1. The underlined words ''a buyer will get something for nothing'' (Paragraph 2) most probably mean that .A. a buyer will not get what he wantsB. a buyer will gain more than he losesC. a buyer will get what he pays forD. a buyer will get something useful free of charge2. Which of the following statements is NOT mentioned in the passage?A. On seeing a well-designed container, a buyer often neglects (忽略) what is inside it.B. A buyer is also attracted by the size of the container.C. Children are often made to buy a product by its package with attractive pictures.D. Packaging is often a successful advertisement.3. What suggestion does the author give in the passage?A. The best choice for a buyer is to get a product in a plain package.B. A buyer should get what he needs most.C. Do not buy the product which is sold in a glass or dish.D. A buyer should know that the quality of a container has little to do with the quality of the product.

At the beginning of this semester, our history professor _____ a list of books for us to read. A.made out B.fished out C.passed on D.handed in

—I will contact you if there is a promotion. A. You are welcome.B. Sorry, I am not available.C. That's great. Thank you.

交际用语（单选题）本大题共包含5小题，每小题2分，共计10分。阅读对话，从A、B、C三个选项中选择一个能填入空白1.-It's so glad to meet you here! Here, this is Cathleen, my fiancee.-____A. Hello, you are so hot.B. Good to know, but I need to leave now.C. Good to see you here, and she looks great; wish you a happy life in the future.

We 'll send you to the hotel and you can a rest there.A. needB. deserveC. take

Well, that 's to say, every coin has two sides;()technology.A. so isB. so doesC. so has

热门问题