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
Among the left handers, ______.A. few are menB. most of them are womenC. half of them are menD. two thirds are men
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 outB. fished outC. passed onD. handed in
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.
_______ difficulty we may come across ,we should help one another.A. HoweverB. WheneverC. WhereberD. Whatever
Well, that 's to say, every coin has two sides;()technology.A. so isB. so doesC. so has
—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.
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选择合适的单词补全句子。-|||-I __ in the city.-|||-live lives
If you_________in a job for several years, you may be able to accumulate a lot of work experience and skills that would be beneficial to your future career development.A. have workedB. had workedC. have been workingD. had been working
拼写合适的单词补全句子 ( 答案不区分大小写 ; 单词提示中一根小短线代表一个 字母 ) To aut _ _ _ _ _ a factory , office , or industrial process means to put in machines which can do the work instead of people.
ⅢComplete the following sentences with the given sentence structures-|||-get ready for.sa为························备-|||-e.g.Susan has to buy a lot of things to get ready for her trip.(苏珊不得不买很多东西为旅行做准备。)-|||-1 The boy got up early to __ (为上学做准备).-|||-2 I have a lot of work to do to __ (为明天做准备).
拼写合适的单词补全句子(答案不区分大小写;单词提提示中一根小短线代表一个字母)Something that is inf- - - - - has no limit,end,or edge.
The coming of the railways in the 1830s ________ our society and economic life.A. transferredB. transformedC. transportedD. transmitted
The increase in international business and in foreign investment has created a need for executives with knowledge of foreign languages and skills in cross-cultural communication. Americans, however, have not been well trained in either area and, consequently, have not enjoyed the same level of success in negotiation in an international arena as have their foreign counterparts. Negotiating is the process of communicating back and forth for the purpose of reaching an agreement. It involves persuasion and compromise, but in order to participate in either one, the negotiators must understand the ways in which people are persuaded and how compromise is reached within the culture of the negotiation. In many international business negotiations abroad, Americans are perceived as wealthy and impersonal. It often appears to the foreign negotiator that the American represents a large multi-million-dollar corporation that can afford to pay the price without bargaining further. The American negotiator’s role becomes that of an impersonal supplier of information and cash. In studies of American negotiators abroad, several traits have been identified that may serve to confirm this stereotypical perception, while undermining the negotiator’s position. Two traits in particular that cause cross-cultural misunderstanding are directness and impatience on the part of the American negotiator. Furthermore, American negotiators often insist on realizing short-term goals. Foreign negotiators, on the other hand, may value the relationship established between negotiators and may be willing to invest time in it for long-term benefits. In order to solidify the relationship, they may opt for indirect interactions without regard for the time involved in getting to know the other negotiator. Clearly, perceptions and differences in values affect the outcomes of negotiations and the success of negotiators. For Americans to play a more effective role in international business negotiations, they must put forth more effort to improve cross-cultural understanding. [共5题](1)What kind of manager is needed in present international business and foreign investment? [本题2分]A. The man who represents a large multi-million-dollar corporation. B. The man with knowledge of foreign languages and skills in cross-cultural communication. C. The man who is wealthy and impersonal. D. The man who can negotiate with his foreign counterparts.
拼写合适的单词补全句子 ( 答案不区分大小写 ; 单词提示中一根小短线代表一个 字母 ) If there is a bo-- in the economy, there is an increase in economic activity.
6. The children will now play some pieces of music that they ______ themselves. A.were taught posed C.accomplished D.worked7. While she waited,she tried to ______ her mind with pleasant thoughts of the vacation. A.occupy pose C.think D.intensify8. In the film,the peaceful life of a monk ______ the violent life of a murderer. A.is compared with B.is compared to C.is contrasted to D.is contrasted with9. ______ to pay for an order is simplicity itself. A.Use plastic B.Using plastics C.Using plastic D.Used plastic10. Additional time is required for cooking or ______ homemade dishes. A.chill B.to chill C.chilled D.chilling
The Harry Potter series, written by J.K. Rowling, is perhaps the most popular set of novels of the modern era. With seven books and many successful films to its name, the series has gathered about 15 billion dollars in sales. How did the series become so popular? The reason can be broken down into several areas.The first book in the series was rejected 12 times before it was picked up by Bloomsbury—a small publisher in England. So receiving this contract was Rowling's first step to success. However, getting a book contract does not ensure the success of a book. The story was soon loved by children and adults alike. In light of this, Bloomsbury Publishing published a second version of the books with “adult” (less colorful and more boring) book covers. This made it easier for a full range of ages to enjoy the series.Another factor that worked like a charm was that the publisher and Rowling herself, through the books, conducted midnight releases, promotions, and pre-ordering more readers. Customers who feared that their local bookstore would run out of copies responded by pre-ordering over 700,000 copies before the July 8, 2000 release.What does the underlined word “releases” (Para. 3) mean?A. The activity that frees or expresses energy or emotion.B. The announcement about the book’s publishing information.C. The sales of books that is available only at midnight.
拼写合适的单词补全句子（答案不区分大小写；单词提示中一根小短线代表一个字母） Someone or something that is so---- is very serious rather than cheerful or humorous.
一、拼写合适的单词补全句子（答案不区分大小写；单词提示中一根小短线代表一个字母） If someone is __ob---__ , they are extremely fat.
question or statement.Hot pot is a traditional dish in China. It is believed to date back more than 1,000 years to the time of the Jin Dynasty. Hot pot's origins can be found in the dining practices of Mongolian horsemen who rode across the steppe and into northern China. Legend has it that the Mongols used their helmets as pots to simmer (炖) broth (汤底) over open fires, and cooked chunks of meat in the broth.Hot pot cooking seems to have spread to northern China during the Tang Dynasty. In the regional variations developed with different ingredients such as seafood. In the centuries that witnessed the growth of the Song Dynasty, hot pot moved — and changed — further south, with each successive region adapting it to their local ingredients and tastes.The ingredients in a hot pot vary a lot from region to region. Perhaps the most famous hot pot is the Chongqing or Sichuan hot pot. It features a dark red broth chock-full (塞满了的) of spices, chili peppers, and the uniquely mouth-numbing Sichuan peppers. In Beijing and elsewhere in the north, hot pot broth tends to be mild and, compared to its racy southern "cousins", a little light. In the northeast of China, a kind of local sauerkraut (酸菜) is used to add some tang (强烈的味道), making the broth a bit sour. People can choose a version of hot pot according to their taste.1 Hot pot is believed to date back more than 1,000 years to the time of _______.A. the Jin Dynasty B. the Tang DynastyC. the Song Dynasty D. the Yuan Dynasty
拼写合适的单词补全句子 ( 答案不区分大小写 ; 单词提示中根小短线代表一个 字母 ) A va---- is a space that contains no air or other gas.
Elder and weaker Mr. Mag paid_visits to his old friends.A. scarceB. rare()C. insufficientD. inadequate
选择合适的单词补全句子
拼写合适的单词补全句子 ( 答案不区分大小写 ; 单词提示中一根小短线代表一个 字母 ) To enh ---- something means to improve its value, quality, or attractiveness.
These drugs are available over-the-counter without a(n)__________. （）A. infectionB. dosageC. prescription
拼写合适的单词补全句子 ( 答案不区分大小写 ; 单词提示中一根小短线代表一个字母 ) A seq----- of events or things is a number of events or things that come one after another in a particular order.