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Passage 40 Every artist knows in his heart that he is saying something to the public. Not only does he want to say it well, but he wants it to be something which has not been said before. He hopes that the public will listen and understand--he wants to teach them, and he wants them to learn from him. What visual artists like painters want to teach is easy to make out but difficult to explain, because painters translate their experiences into shapes and colors, not words. (40) They seem to feel that a certain selection of shapes and colors, out of the countless billions possible, is exceptionally interesting for them and worth showing to us. Without their work we would never have noticed these particular shapes and colors, or have felt the delight which they brought to the artist. Most artists take their shapes and colors from the world of nature and from human bodies in motion and stillness; their choices indicate that these aspects of the world are worth looking at, that they contain beautiful sights. Contemporary artists might say that they merely choose subjects that provide an interesting pattern, and that there is nothing more in it, yet even they do not choose entirely without reference to the character of their subjects. If one painter chooses to paint an injured leg and another a lake in moonlight, each of them is directing our attention to a certain aspect of the world. Each painter is telling us something, showing us something, emphasizing something--all of which means that, consciously or unconsciously, he is trying to teach us. Without the artists’ work, the public would not______.
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Passage 49Although English is not as old as Chinese, it is spoken by many people around the world every day. English speakers are always creating new words, and we are often able to know where most words come from. Sometimes, however, no one may really know where a word comes from. Did you ever think about why hamburgers are called hamburgers, especially when they are not made with ham About a hundred years ago, some men went to America from Europe. They came from a big city in Germany called Hamburg. They did not speak good English, but they ate good food. When some Americans saw them eating round pieces of beef, they asked the Germans what it was. The Germans did not understand the question and answered, "We come from Hamburg." One of these Americans owned a restaurant, and had an idea. He cooked some round pieces of beef like those which the men from Hamburg ate. Then he put them between two pieces of bread and started selling them. Such bread came to be called "hamburgers". Today, "hamburgers" are sold in many countries around the world. Whether this story is true or not, it certainly is very interesting. Knowing why any word has a certain meaning is interesting, too. The explanation, for most English words, can be found in any large English dictionary. According to the author, which of the following can often be found in any large English dictionary
Passage 44 For more than thirty years scientists have been searching for signs of life on other planets. Most of these searches have been done over the radio. The hope is that someone in outer space may be trying to get in touch with us. Scientists also have sent radio and television messages, as well as messages on spaceships traveling through space, on the chance that someone may be receptive to such messages. Scientists are using powerful radio telescopes to "listen" to signals from about 1,000 stars, all within 100 light years of the earth. In addition, they will scan the entire sky to listen for radio messages from more distant stars. Using a computer, they will be able to monitor more than eight million channels at a time. Scientists are looking for any signal that stands out from the background noise. Of the 200 billion stars in the Milky Way galaxy, scientists find that five percent of the stars are like our sun. Perhaps half of them have a planet like the earth. Such a planet would be a reasonable distance from the star for the temperatures to be right for the evolution of life. Believing that there are the inhabitable (that can be lived in) planets in our galaxy, most scientists agree that chances are that one or more of these planets support some life. However, many scientists wonder whether intelligent life exists on other planets. Some believe that thirty years of searching without any intelligent messages show that no one is out there. They say that the evolution of intelligence comparable to ours is unlikely. (44) Other scientists believe that our search hasn’t been long enough to rule out the possibility that intelligent life exists in our galaxy. Although our sun family is only about five billion years old, our galaxy is about 20 billion years old. In that time some scientists think it is likely that civilizations are much more advanced than ours. Perhaps these civilizations send us no signals; perhaps we have not recognized the signals they have sent us. If we hope to find intelligent life, these scientists believe that we have to keep looking. According to the passage, how many planets in our galaxy might be inhabitable
Passage 39 Many people have difficulty in studying mathematics. Sometimes their difficulty stems from the psychological idea that they are "not good at math". (39) It has been demonstrated that many times that it is often this idea that is causing their problems rather than any lack of skill in mathematics. The best way to deal with this problem is to tell yourself that math involves using the same numbers you have been using all your life and that you know them as well as anyone else. Then set your mind to learning how they are used in the particular part of mathematics you are studying. Many schools offer "math anxiety" courses which are designed to help people overcome their fear of math. Another problem many people encounter is that in mathematics, unlike some other subjects you may have studied, the material has a very important sequence or order. If you do not understand a section of mathematics text, it is no use going on to the next section. Many sections of math books are based on information presented earlier, so it is essential that you understand a section before going on to the next. Sometimes students in mathematics courses do not read the written material in the text but assume that the instructor will tell them what they need to know. This can cause them serious problems, since many instructors assume that students have read the text before coming to class. The written sections of mathematics textbooks contain much valuable information. Sometimes the difficulty of math students comes from______.
Passage 43 Sometimes it is impossible to send all the mail that arrives at the post office. Perhaps there is an inadequate or illegible address and there is no return address. The post office cannot just throw the mail away, so it becomes "dead mail". Dead mail is then sent to one of the U.S. Postal Service’s dead mail offices in Atlanta, New York, Philadelphia, St. Paul, and San Francisco. Seventy-five million pieces of mail can end up in these offices in one year. The staff ’of the dead mail offices has different ways to deal with all of these pieces of dead mail. First of all, they look for clues that can help them deliver the mail; they open packages in the hope that something inside will show where the package came from or is going to. (43) Dead mail will also be listed on a computer so that people can call in and cheek to see if a missing item is there. However, all of the mail cannot simply be stored forever: there is just too much of it. When a lot of dead mail has piled up, the dead mail offices hold public auctions. Every three months, the public is invited to the offices and containing items found in dead mail packages are sold to the highest bidder (出价人). The staff in a dead mail office may open a package in order to find______.
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