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Water problems in the future will become more intense and more complex. Our increasing population will tremendously increase urban wastes, primarily sewage. On the other hand, increasing demands for water will decease substantially the amount of water available for diluting wastes. Rapidly expanding industries which involve more and more complex chemical processes will produce large volumes of liquid wastes, and many of these will contain chemicals which are noxious. To feed our rapidly expanding population, agriculture will have to be intensified. This will involve ever-increasing quantities of agricultural chemicals. From this, it is apparent that drastic steps must be taken immediately to develop corrective measures for the pollution problem.There are two ways by which this pollution problem can be dwindled. The first relates to the treatment of wastes to decrease their pollution hazard. This involves the processing of solid wastes "prior to" disposal and the treatment of liquid wastes, or effluents, to permit the reuse of the water or minimize pollution upon final disposal.A second approach is to develop an economic use for all or a part of the wastes. Farm manure is spread in fields as a nutrient or organic supplement. Effluents from sewage disposal plants are used in some areas both for irrigation and for the nutrients contained. Effluents from other processing plants may also be used as a supplemental source of water. Many industries, such as meat and poultry processing plants, are currently converting former waste produces into marketable byproducts. Other industries are exploring potential economic uses for waste products.1.The purpose of this passage is (  ).2.Which of the following points is NOT INCLUDED in the passage?3.The reader can conclude that (  ).  4.The author gives substance to the passage through the use of (  ).  5.The words "prior to" (Para. 2) probably mean(  ).

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Clothes play a critical part in the conclusions we reach by providing clues to who people are, who they are not, and who they would like to be. They tell us as a good deal about the wearer's background, personality, status, mood and social outlook.Since clothes are such an important source of social information, we can use them to manipulate people's impression of us. Our appearance assumes particular significance in the initial phases of interaction that is likely to occur. An elderly middle-class man or woman may be alienated by a young adult who is dressed in an unconventional maimer, regardless of the person's education, background, or interests.People tend to agree on what certain types of clothes mean. Adolescent girls can easily agree on the lifestyles of girls who wear certain outfits, including the number of boyfriends they likely have had and whether they smoke or drink.Newscasters, or the announcers who read the news on TV, are considered to be more convincing, honest, and competent when they are dressed conservatively. And college students who view themselves as taking an active role in their interpersonal relationships say they are concerned about the costumes they must wear to play these roles successfully. Moreover, many of us can relate instances in which the clothing we wore changed the way we felt about ourselves and how we acted.Perhaps you have used clothing to gain confidence when you anticipated a stressful situation, such as a job interview, or a court appearance.In the workplace, men have long had well-defined precedents and role models for achieving success. It has been otherwise for women. A good many women in the business world are uncertain about the appropriate mixture of “masculine” and “feminine” attributes they should convey by their professional clothing. The variety of clothing alternatives to women has also been greater than that available for men.1.According to the passage, the way we dress (  ).2.From the third paragraph of the passage, we can conclude that young adults tend to believe that certain types of clothing can (  ).  3.The word "precedent" (Line 1, Para. 6) probably refers to (  ).  4.According to the passage, many career women find themselves in difficult situations because (  ).  5.What is the passage mainly about?

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Opportunities for rewarding work become fewer for both men and women as they grew older. After age 40, job hunting becomes even more difficult. Many workers stay at jobs they are too old for rather than face possible rejection. Our youth-oriented, threw-away culture sees little value in older people. In writer Lillian Hellman's words, they have "the wisdom that comes with age that we can't make use of.”Unemployment and economic need for work is higher among older women, especially minorities, than among younger white women. A national council reports these findings. Though unemployed longer when seeking work, older women job-hunt harder, hold a job longer with less absenteeism, perform as well or better, are more reliable, and are more willing go learn than men or younger women. Yet many older women earn poor pay and face a future of poverty in their retirement years. When sexism meets ageism, poverty is no longer on the doorstep-it moves in, according to Tish Sommers, director of a special study on older women for the National Organization for Women. Yet a 1981 report on the White House Conference on Aging shows that as a group, older Americans are the "wealthiest, best fed, best housed, healthiest, most self-reliant older population in our history." This statement is small comfort to those living below the poverty line, but it does explode some of the old traditional beliefs and fears.Opportunities for moving in and up in a large company may shrink but many older people begin successful small businesses, volunteer in satisfying activities, and stay active for many years. They have few role models because in previous generations the life span was much shorter and expectations of life were fewer. They are ploughing new ground.Employers are beginning to recognize that the mature person can bring a great of stability and responsibility to a position. One doesn't lose ability and experience on the eve of one's 65th or 70th birthday any more than one grows up instantly at age 21.1.After the age of 40,(  ).2.From Hellman's remark, we can see that (  ).  3.Tish Sommers argues that (  ).  4.According to the third paragraph, it can be seen that older Americans (  ).  5.It can be concluded from the passage that the writer(  ).

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The kids are hanging out. I pass small bands of students, in my way to work these mornings. They have become a familiar part of the summer landscape. These kids are not old enough for jobs. Nor are they rich enough for camp. They are school children without school. The calendar called the school year ran out on them a few weeks ago. Once supervised by teachers and principals, they now appear to be in "self care".Passing them is like passing through a time zone. For much of our history, after all, Americans arranged the school year around the needs of work and family. In 19th-century cities, schools were open seven or eight hours a day, 11 months a year. In rural America, the year was arranged around the growing season. Now, only 3 percent of families follow the agricultural model, but nearly all schools are scheduled as if our children went home early to milk the cows and took months off to work the crops. Now, three-quarters of the mothers of school-age children work, but the calendar is written as if they were home waiting for the school bus.The six-hour day, the 180-day school year is regarded as something holy. But when parents work an eight-hour day and a 240-day year, something different. It means that many kids go home to empty houses. It means that, in the summer, they hang out.“We have a huge mismatch between the school calendar and realities of family life.” says Dr. Ernest Boyer, head of the Carnegie Foundation for the Advancement of Teaching.Dr. Boyer is one of many who believe that a radical revision of the school calendar is inevitable. “School, whether we like it or not, is educational. It always has been.”His is not popular idea. Schools are routinely burdened with the job of solving all our social problems. Can they be asked to meet the needs of our work and family lives?In may be easier to promote a longer school year on its educational merits and, indeed, the educational case is compelling. Despite the complaints and studies about our kids' lack of learning, the United State still has a shorter school year than any industrial nation. In most of Europe, the school year is 220 days. In Japan, it is 240 days long. While classroom time alone doesn't produce a well-educated child, learning takes time and more learning takes more time. The long summers of forgetting take a toll.The opposition to a longer school year comes from families that want to and can provide other experiences for their children. It comes from teachers. It comes from tradition. And surely from kids. But the most important part of the conflict has been over the money.1.Which of the following is an opinion of the author's?2.The current American school calendar was developed in the 19th century according to (  ).3.The author thinks that the current school calendar (  ).  4.Why was Dr. Boyer's idea unpopular?5.The main purpose of the passage is(  ).

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I am afraid to sleep. I have been afraid to sleep for the last few weeks. I am so tired that, finally, I do sleep, but only for a few minutes, it is not a bad dream that wakes me; it is the reality I took with me into sleep. I try to think of something else. Immediately the woman in the marketplace comes into my mind.I was on my way to dinner last night when I saw her. She was selling skirts. She moved with the same ease and loveliness. I often saw in the women of Laos. Her long black hair was as shiny as the black silk of the skirts she was selling. In her hair, she wore three silk ribbons, blue, green, and white. They reminded me of my childhood and how my girlfriends and I used to spend hours braiding ribbons into our hair.I don't know the word for "ribbons", so I put my hand to my own hair and, with three fingers against my head, I looked at her ribbons and said "Beautiful." She lowered her eyes and said nothing. I wasn't sure if she understood me (I don't speak Laotian very well).I looked back down at the skirts. They had designs on them: squares and triangles and circles of pink and green silk. They were very pretty. I decided to buy one of those skirts, and I began to bargain with her over the price. It is the custom to bargain in Asia. In Laos bargaining is done in soft voices and easy moves with the sort of quiet peacefulness.She smiled, more with her eyes than with her lips. She was pleased by the few words I was able to say in her language, although they were mostly numbers, and she saw that I understood something about the soft playfulness of bargaining. We shook our heads in disagreement over theprice; then, immediately, we made another offer and then another shake of the head. She was so pleased that unexpectedly, she accepted the last offer I made. But it was too soon. The price was too low. She was being too generous and wouldn't make enough money. I moved quickly and picked up two more skirts and paid for all three at the price set; that way I was able to pay her three times as much before she had a chance to lower the price for the larger purchase. She smiled openly then, and, for the first time in months, my spirit lifted. I almost felt happy.The feeling stayed with me while she wrapped the skirts in a newspaper and handed them to me. When I left, though, the feeling left, too. It was as though it stayed behind in marketplace, I left tears in my throat. I wanted to cry. I didn't, of course.I have learned to defend myself against what is hard; without knowing it, I have also learned to defend myself against what is soft and what should be easy.I get up, light a candle and want to look at the skirts. They are still in the newspaper that the woman wrapped them in. I remove the paper, and raise the skirts up to look at them again before I pack them. Something falls to floor. I reach down and feel something cool in my hand. I move close to the candlelight to see what I have. There are five long silk ribbons in my hand, all different colors. The woman in the marketplace! She has given these ribbons to me!There is no defense against a generous spirit, and this time I cry, and very hard, as if I could make up for all the months that I didn't cry.1.According to the writer, the woman in the marketplace (  ).  2.Which of the following in NOT correct?3.The writer assumed that the woman accepted the last offer mainly because woman (  ).4.Why did the writer finally decide to buy three skirts?5.When the writer left the marketplace, she wanted to cry, but did not because(  ).

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Learning disabilities are very common. They affect perhaps 10 percent of all children. Four times as many boys as girls have learning disabilities.Since about 1970, new research has helped brain scientists understand these problems better.  (1)Scientists now know there are many different kinds of learning disabilities and that they are caused by different things. There is no longer any question that all learning disabilities result from differences in the way the brain is organized.(2) You cannot look at a child and tell if he or she has a learning disability. There is no outward sign of the disorder. So some researchers began looking at the brain itself to learn what might be wrong.In one study, researchers examined the brain of a learning-disabled person, who had died in an accident.  (3)They found two unusual things. One involved cells in the left side of the brain, which control language. These cells are normally white. In the learning-disabled person, however, these cells were gray. The researchers also found that many of the nerve cells were not in a line the way they should have been. The nerve cells were mixed together.The study was carried out under the guidance of Norman Geschwind, an early expert on learning disabilities. (4)Dr. Geschwind proposed that learning disabilities resulted mainly from problems in the left side of the brain. He believed this side of the brain failed to develop normally. Probably, he said, nerve cells there did not connect as they should. So the brain was like an electrical device in which the wires were not crossed.(5)Other researchers did not examine brain tissue. Instead, they measured the brain's electrical activity and made a map of the electrical signals. Frank Duffy experimented with this technique at Children's Hospital Medical Center in Boston. Dr Duffy found large difference in the brain activity of normal children and those with reading problems. The differences appeared throughout the brain. He said his research is evidence that reading disabilities involve damage to a wide area of the brain, not just the left side.

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