大学英语改错练习题.doc

改错练习(1)（一）Americans this year will swallow 15000 tons ofaspirin, one of safest and most effective drugs 1._invented by man. The most popular medicines in the 2._world today, it is an effective pain reliever. Its badeffects are relatively mild, and it is cheap.For millions of people suffered from arthrities, 3._it is the only thing that works. Aspirin, in short, istruly the 20th-century wonder drug. It is also thesecond largest suicide drug and is the leading cause ofpoisoning among children. it has side effects that, if 4._relatively mild, are largely unrecognized between users. 5._Although aspirin was first sold by Germam companyin 1899, it has been around much longer than that.Hippocrates, in ancient Greece, understood the medical valueof the leaves and tree bark which today is known to 6._contain salicylates, the chemical in aspirin. during the19th century, there was a great number of experimentation 7._in Europe with this chemical, and it led in the introduction 8._of aspirin. By 1915, aspirin tablets were availablein the United States.A small quantity of aspirin(two five-grain tablets)relieves pain and inflammation. It also reduces down 9._fever by interfering with some of the bodys reactions.Specifically, aspirin seems to slow down the formationof the acids involved in pain and the complex chemicalreactions that cause fever. The chemistry of these acidsis not fully understood, and the slowing effect of aspirin 10._is well known. 二Crime has its own cycles, a magazine reportedsome years before. Police records that were studied 1._for five years from over 2400 cities and towns showa surprised link between changes in the season and 2._crime patterns.The pattern of crime has varied very littleover a long period of years. Murder reaches its highduring July and August, as does rape and other violent 3._attacks.Murder, however, is more than seasonal: it is a 4._weekend crime. It is also a hightime crime: 62 percentof members are committed between 6 p.m. and 6 a.m.Unlike the summer high in crimes of bodily harm,burglary has a different cycle. You are most likelyto being robbed between 6 p.m. and 2 a.m. on a Saturday 5._night in December, January,or February. The mostuncriminal month of all? May-except for one strangestatistic. More dog bites are reported in this monththan in an other month of the year. 6._Apparent our intellectual seasonal cycles are 7._completely different from our criminal fessor Huntington, of the Foundation for the Studyof Cycles, made extensive studies to discover theseasons when people read serious books, attend scientificmeetings, make the highest scores on examinations,and to propose the most changes to patents. In all 8._instances, he found a spring peak and an autumn peakseparated by a summer low. On other hand, Professor 9._huntintons studies indicated that June is the peakmonth for suicides and admissions in mental hospitals. 10._June is also a peak month for marriages!三Only a generation ago, Mauritanias capital city wasmany days walk from the Sahara. Today it is in the Sahara. 1._The sand blows through the city streets and piles up in 2._walls and fences. The desert stretches out as far as theeye can see.In some parts of the Amazon rain forest in brazil, allthe trees have cut down. The earth lies bare and dry in the 3._hot sun. Nothing grow there anymore. 4._Over vast areas of every continent, the rainfall andvegetation necessary for life is disappearing. Already 5._more than 40 percent of the earths land is desert and 6._desert-like. About 628 million people-one out of seven-live in these dry regions. In the past, they have managed tosurvive, but in difficulty. Now, largely through problems 7._caused by modern life, our existence is threatened by the 8._slow, steady spread of the earths deserts.Many countries first became concerned in 1970s after 9._a terrible drought and famine destroyed Africas Sahel,the fragile desert along the south edge of the Sahara.Thousands of people died even though there was a worldwideeffort to send food and medicine to the starved people. 10._四 Although AsianAmericans make up only 2.4 percent of thenations population, it constitute 17.1 percent of 1. _undergraduates at Harvard, 18 percent 2. _at the Massachusetts Institute of Technologyand 27.3 percent at the University of Californiaat Berkeley. Why are AsianAmericans doing so well?Are they grinds, as some stereotype suggest?Or can we have a lesson from them about values 3. _we have long treasured them but may have misplacedlike 4. _hard work, the family and education?The young Asians achievements have led in 5. _a series of fascinated studies. Perhaps the most 6. _disturbing results come from the research carried on 7. _by a University of Michigan psychologist,Harold W. Stevenson, who has comparedmore than 7,000 students in Chicago and Minneapoliswith counterpart in Beijing, Taipei and Sendai. 8. _On a series of math test, the Americansdid worst at all grade levels. Stevenson found difference 9. _in IQ. But if differences in performance are showing up in kindergarten, it suggests something happen 10. _in the family, even before the children get to school.五No one can be brilliant at everything. In fact, successin one area often precludes success in others.1. _A famous politician once told me that his careerhas practically destroyed his marriage. “I have2. _no time for my family,” he explained. “I travel a lot.And even though I am home, I hardly see my kids.3. _Ive got power, money, prestigebut as a husbandor father, I am a flop.” Certain kinds of success canindeed be destructive. The danger of earlier success is4. _particularly acute. I recall in my childhood a girl5. _who skill on ice skates marked her as “Olympic material.”6. _While rest of us were playing, bicycling, reading7. _and just lofting, this girl skatedeveryday afterschool or all weekend. Her picture often appeared8. _on the papers, and the rest of us envied her glamorous life.9. _Years later, however, she spoke bitterly of thoseearly triumphs. “I never prepared myself with anything10. _but ice,” she said. “I peaked at 17 and its been downhillever since.” 六 Why are so many people so afraid of failure?Simply because no one tell us how to fail1. _so failure becomes a growing experience.2. _We forget that failure is a part of the human conditionand that every person has the right to failure. Most parents3. _work hard in either preventing failure or shielding4. _their children out the knowledge that they have failed.5. _One way is to lower standards. A mother describesher childs hastily made ta