2023年6月英语四级真题及答案解析第二套.doc

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1、2023年6月英语四级真题 第二套（文字版整理）Part I Writing （30 minutes）Directions：For this part, you are allowed 30 minutes to write a letter to express your thanks to one of your school teachers upon entering college. You should write at least 120 words but no more than 180 words. Part III Reading Comprehension （40 mi

2、nutes）Section A Directions: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Contrary to popular belief, older people generally do not want to live with their children. Moreover,

3、 most adult children _(26)every bit as much care and support to their aging parents as was the case in the good old days, and roost older people do not feel _(27). About 80% of people 65 years and older have living children, and about 90% of them have _(28)contact with their children. About 75% of e

4、lderly parents who dont go to nursing homes live within 30 minutes of at least one of their children. However, _(29)having contact with children does not guarantee happiness in old age. In fact, some research has found that people who are most involved with their families have the lowest spirits. Th

5、is research may be _(30), however, as ill health often makes older people more _(31)and thereby increases contact with family members. So it is more likely that poor health, not just family involvement, _(32)spirits. Increasingly, researchers have begun to look at the quality of relationships, rathe

6、r than at the frequency of contact, between the elderly and their children. If parents and children share interests and values and agree on childrearing practices and religious _(33)they are likely to enjoy each others company. Disagreements on such matters can _(34)cause problems. If parents are an

7、gered by their daughters divorce, dislike her new husband, and disapprove of how she is raising their grandchildren, _(35)are that they are not going to enjoy her visits. A.abandoned B.advanced C.biased D.chances E.commitment F.dampens G.dependent H.distant I.frequent J.fulfillment K.grant L.merely

8、M.provide N.understandably O.unrealisticallySection B Directions: In this section, you are going to read a passage with ten statements attached to it. Each statement contains information given in one of the paragraphs. Identify the paragraph from which the information is derived. You may choose a pa

9、ragraph more than once. Each paragraph is marked with a letter. Answer the questions by marking the corresponding letter on Answer Sheet 2. Could Food Shortages Bring Down Civilization? A For many years I have studied global agricultural, population, environmental and economic trends and their inter

10、actions. The combined effects of those trends and the political tensions they generate point to the breakdown of governments and societies. Yet I, too, have resisted the idea that food shortages could bring down not only individual governments but also our global civilization. B I can no longer igno

11、re that risk. Our continuing failure to deal with the environmental declines that are undermining the world food economy forces me to conclude that such a collapse is possible. C As demand for food rises faster than supplies are growing, the resulting food-price inflation puts severe stress on the g

12、overnments of many countries. Unable to buy grain or grow their own, hungry people take to the streets. Indeed, even before the steep climb in grain prices in 2023, the number of failing states was expanding. If the food situation continues to worsen, entire nations will break down at an ever increa

13、sing rate. In the 20th century the main threat to international security was superpower conflict; today it is failing states. D States fail when national governments can no longer provide personal security, food security and basic social services such as education and health care. When governments l

14、ose their control on power, law and order begin to disintegrate. After a point, countries can become so dangerous that food relief workers are no longer safe and their programs are halted. Failing states are of international concern because they are a source of terrorists, drugs, weapons and refugee

15、s(难民), threatening political stability everywhere. E The surge in world grain prices in 2023 and 2023and the threat they pose to food securityhas a different, more troubling quality than the increases of the past. During the second of the 20th century, grain prices rose dramatically several times. I

16、n 1972, for instance, the Soviets. I recognizing their poor harvest early, quietly cornered the world wheat market. As a result, wheat prices elsewhere more than doubled, pulling rice and com prices up with them. But this and other price shocks were event-drivendrought in the Soviet Union, crop-shri

17、nking heat in the U.S. Corn Belt. And the rises were short-lived: prices typically returned to normal with the next harvest. FIn contrast, recent surge in world grain prices is trend-driven, making it unlikely to reverse without a reversal in the trends themselves. On the demand side, those trends i

18、nclude the ongoing addition of more than 70 million people a year, a growing number of people wanting to move up the food chain to consume highly grain-intensive meat products, and the massive diversion(转向)of U.S. grain to the production of bio-fuel. GAs incomes rise among low-income consumers, the

19、potential for further grain consumption is huge. But that potential pales beside the never-ending demand for crop-based fuels. A fourth of this years U.S. grain harvest will go to fuel cars. HWhat about supply? The three environmental trendsthe shortage of fresh water, the loss of topsoil and the ri

20、sing temperaturesare making it increasingly hard to expand the worlds grain supply fast enough to keep up with demand. Of all those trends, however, the spread of water shortages poses the most immediate threat. The biggest challenge here is irrigation, which consumes 70% the worlds fresh water. Mil

21、lions of irrigation wells in many countries are now pumping water out of underground sources faster than rainfall can refill them. The result is falling water tables(地下水位)in countries with half the worlds people, including the three big grain producersChina, India and the U.S. IAs water tables have

22、fallen and irrigation wells have gone dry, Chinas wheat crop, the worlds largest, has declined by 8% since it peaked at 123 million tons in 1997. But water shortages are even more worrying in India. Millions of irrigation wells have significantly lowered water tables in almost every state. JAs the w

23、orlds food security falls to pieces, individual countries acting in their own self-interest are actually worsening the troubles of many. The trend began in 2023, when leading wheat-exporting countries such as Russia and Argentina limited or banned their exports, in hopes of increasing local food sup

24、plies and thereby bringing down domestic food prices. Vietnam banned its exports for several months for the same reason. Such moves may eliminate the fears of those living in the exporting countries, but they are creating panic in importing countries that must rely on what is then left for export. K

25、In response to those restrictions, grain-importing countries are trying to nail down long-term trade agreements that would lock up future grain supplies. Food-import anxiety is even leading to new efforts by food-importing countries to buy or lease farmland in other countries. In spite of such tempo

26、rary measures, soaring food prices and spreading hunger in many other countries are beginning to break down the social order. LSince the current world food shortage is trend-driven, the environmental trends that cause it must be reversed. We must cut carbon emissions by 80% from their 2023 levels by

27、 2023, stabilize the worlds population at eight billion by 2040, completely remove poverty, and restore forests and soils. There is nothing new about the four objectives. Indeed, we have made substantial progress in some parts of the world on at least one of thesethe distribution of family-planning

28、services and the associated shift to smaller families. MFor many in the development community, the four objectives were seen as positive, promoting development as long as they did not cost too much. Others saw them as politically correct and morally appropriate. Now a third and far more significant

29、motivation presents itself: meeting these goals may necessary to prevent the collapse of our civilization. Yet the cost we project for saving civilization would amount to less than $200 billion a year, 1/6 of current global military spending. In effect, our plan is the new security budget.36. The mo

30、re recent steep climb in grain prices partly results from the fact that more and more people want to consume meat products. 37.Social order is breaking down in many countries because of food shortages. 38.Rather than superpower conflict, countries unable to cope with food shortages now constitute th

31、e main threat to world security. 39.Some parts of the world have seen successful implementation of family planning. 40.The author has come to agree that food shortages could ultimately lead to the collapse of world civilization. 41.Increasing water shortages prove to be the biggest obstante to boost

32、ing the worlds grain production. 42.The cost for saving our civilization would be considerably less than the worlds current military spending. 43.To lower domestic food prices, some countries limited or stopped their grain exports. 44.Environmental problems must be solved to case the current global

33、food shortage. 45.A quarter of this years American grain harvest will be used to produce bio-fuel for cars.Section C Passage One Questions 46 to 50 are based on the following passage. Declining mental function is often seen as a problem of old age，but certain aspects of brain function actually begin

34、 their decline in young adulthood, a new study suggests. The study, which followed more than 2,000 healthy adults between the ages of 18 and 60, found that certain mental functionsincluding measures of abstract reasoning, mental speed and puzzle-solvingstarted to dull as early as age 27. Dips in mem

35、ory, meanwhile, generally became apparent around age 37. On the other hand, indicators of a persons accumulated knowledgelike performance on tests of vocabulary and general knowledgekept improving with age, according to findings published in the journal Neurobiology of Aging. The results do not mean

36、 that young adults need to start worrying about their memories. Most peoples minds function at a high level even in their later years, according to researcher Timothy Salthouse. These patterns suggest that some types of mental flexibility decrease relatively early in adulthood, but that the amount o

37、f knowledge one has, and the effectiveness of integrating it with ones abilities，may increase throughout all of adulthood if there are no dispases, Salthouse said in a news release. The study included healthy, educated adults who took standard tests of memory, reasoning and perception at the outset

38、and at some point over the next seven years. The tests are designed to detect subtle (细微的)changes in mental function, and involve solving Puzzles, recalling words and details from stories, and identifying patterns in collections of letters and symbols. In general, Salthouse and his colleagues found,

39、 certain aspects of cognition (认知能力)generally started to decline in the late 20s to 30s. The findings shed light on normal age-related changes in mental function, which could aid in understanding the process of dementia(痴呆),according to the researchers. “By following individuals over time,” Salthous

40、e said, we gain insight in cognition changes, and may possibly discover ways to slow the rate of decline.” The researchers are currently analyzing, the study participants health and lifestyle to see which factors might influence age-related cognitive changes. 46.What is the common view of mental fun

41、ction?A.It varies from person to person. C.It gradually expands with age. B.It weakens in ones later years. D.It indicates ones health condition.47.What does the new study find about mental functions? A.Some diseases inevitably lead to their decline. B.They reach a peak at the age of 20 for most peo

42、ple. C.They are closely related to physical and mental exercise. D.Some of them begin to decline when people are still young.48.What does Timothy Salthouse say about peoples minds in most cases?A.They tend to decline in peoples later years. B.Their flexibility determines ones abilities. C.They funct

43、ion quite well even in old age. D.Their functioning is still a puzzle to be solved.49.Although peoples minds may function less flexibly as they age, they_.A.may be better at solving puzzles B.can memorize things with more ease C.may have greater facility in abstract reasoning D.can put what they hav

44、e learnt into more effective use50.According to Salthouse, their study may help us_.A.find ways to slow down our mental decline 6.find ways to boost our memories C.understand the complex process of mental functioning D.understand the relation between physical and mental healthPassage Two Questions 5

45、1 to 55 are based on the following passage. The most important thing in the news last week was the rising discussion in Nashville about the educational needs of children. The shorthand(简写)educators use for this is pre-Kmeaning instruction before kindergartenand the big idea is to prepare 4-year-olds

46、 and even younger kids to be ready to succeed on their K-12 journey. But it gets complicated. The concept has multiple forms, and scholars and policymakers argue about the shape, scope and cost of the ideal program. The federal Head Start program, launched 50 years ago, has served more than 30 milli

47、on children. It was based on concepts developed at Vanderbilt Universitys Peabody College by Susan Gray, the legendary pioneer in early childhood education research. A new Peabody study of the Tennessee Voluntary Pre-K program reports that pre-K works, but the gains are not sustained through the thi

48、rd grade. It seems to me this highlights quality issues in elementary schools more than pre-K, and indicates longer-term success must connect pre-K with all the other issues, related to educating a child. Pre-K is controversial. Some critics say it is a luxury and shouldnt be free to families able to pay. Pre-K advocates insist it is proven and will succeed if integrated with the rest of the childs schooling. I lean toward the latter view. This is, in any c