1、托福-练习十七及答案解析(总分：20.00，做题时间：90 分钟)一、Passage 1(总题数：6，分数：10.00)1 Laughter is a key to a good life and good health: it can diminish feelings of tension, anger, and sadness. Just as exercise conditions our bodies, frequent laughter can train our bodies to be healthier. When laughter is a regular experien
2、ce, it lowers blood pressure and boosts brain chemicals that fight pain. It can also reduce stress hormones that increase vulnerability to illness, as well as increase hormones that have been shown to help produce restful sleep. Laughter is like an instant vacation in the way it changes our psychobi
3、ology.2 To make laughter a regular part of your life, try keeping a humor journal in which you record some of the amusing things that happen to you. Another technique is to create a weekly fun time to look forward to, such as watching a comedy video or having a dinner with friends that features joke
4、 telling. Another sure source of laughter is spending time with children and animals.（分数：2.00）(1).According to the passage, laughter provides all of the following benefits EXCEPT（分数：1.00）A.elevating brain chemicals that prevent painB.increasing the bodys vulnerability to illnessC.promoting a more re
5、stful kind of sleepD.reducing feelings of stress and anger(2).The author recommends all of the following EXCEPT（分数：1.00）A.playing tricks on family and friendsB.planning a special fun time every weekC.enjoying time with pets and childrenD.writing down humorous experiencesNearly all animals have a goo
6、d sense of their own bodies, the trait of physical self- awareness. For this reason, animals do not generally bump into things. Horses know how much room they have around them when they move through narrow spaces. A horse can run between two trees or around large rocks in a way that clearly shows th
7、e horses knowledge of its own body size. Animals show self-awareness in how they respond to discomfort. A dog, for example, has no trouble knowing where to scratch itself to kill a flea. Many animals show self-awareness when they recognize their own reflection. While looking at itself in a mirror, a
8、n elephant may move its trunk over different parts of its body. A chimpanzee will make faces, look inside its mouth, or stick out its tongue in front of a mirror.（分数：2.00）(1).The passage describes all of the following animals as self-aware EXCEPT（分数：1.00）A.orsesB.dogsC.fleasD.elephants(2).Which of t
9、he following is NOT given as an example of self-awareness?（分数：1.00）A.Running between trees without touching themB.Using sign language to communicateC.Scratching to relieve discomfortD.Making faces in front of a mirror1.1 An important element of drama is that it is a presentation by performers in fro
10、nt of an audience-for example, a ceremony conducted by civic leaders before members of a community. Another aspect is costumes, such as those worn by tribal chiefs who impersonate animals or gods. Moreover, drama involves storytelling-recitation of myths or legends, teaching lessons through stories-
11、to a group of listeners. Sometimes the storyteller imitates the characters in the story by changing his or her voice for different characters.The passage mentions all of the following as aspects of drama EXCEPT（分数：1.00）A.wearing costumesB.performing before an audienceC.writing dialogue for character
12、sD.narrating a story2.Skin cancer is the most prevalent of all cancers. The principal cause of skin cancer is overexposure to sunlight, according to most medical experts. Chronic sun exposure- especially when it causes sunburn or blistering-results in more skin cancer than does any other risk factor
13、, including exposure to x-rays and a family history of the disease. The most effective preventative measure is sun avoidance.All of the following are factors that can cause skin cancer EXCEPT（分数：1.00）A.exposure to x-raysB.sun blisteringC.amily history of skin cancerD.sun avoidance1 Archaeology is th
14、e study of prehistoric and historic cultures through the analysis of material remains. Archaeologists interpret the past from the objects made by past peoples. Often these objects lie buried in the ground, so our image of the archaeologist is of a scientist who is always digging. Archaeological digs
15、 include ruins of buildings and monuments, and also objects made by people who often had no written language and therefore no other record of their way of life. Tools, weapons, body ornaments, household furnishings, and items used in religious ceremonies are all examples of artifacts that typically
16、turn up in digs.2 Like historians, archaeologists establish the sequence of events that occurred in a given place and time period. But unlike historians, they take on a time span of roughly half a million years. Archaeologists try not only to piece together what happened in a particular setting but
17、also to fit these small pieces into a much bigger picture. They aim to document how big changes occurred in the way peoples exploited their environment and one another.（分数：2.00）(1).The passage mentions all of the following as studied by archaeologists EXCEPT（分数：1.00）A.weaponsB.religious objectsC.dia
18、riesD.remains of buildings(2).Archaeologists do all of the following EXCEPT（分数：1.00）A.plan and design more efficient uses for objects and materialsB.determine what took place in a specific place and time periodC.dig up the remains of objects that are buried in the groundD.explain how past humans rel
19、ated to others and their environment1 Indian filmmaker Satyajit Ray is still regarded by many film critics as one of the worlds great directors. Rays films are known for their compassion, honesty, and quiet dignity. His Apu Trilogy, three films about Bengali life, was hailed as a national epic in th
20、e 1950s. The first film, Pather Panchali, is the story of a Bengali familys noble struggle against poverty and the heartbreaks of life. It was followed by Aparajito, in which the son of the family, Apu, grows to manhood. In the final film, The World of Apu, the young man marries, but fails at his li
21、fes ambitions, and then, after losing his wife, he wanders across the country for several years before returning home to claim his son.2 Satyajit Rays movies have never been very popular in India itself, but those who appreciate his unobtrusive technique and his compassion for his characters view hi
22、s films as a poetic record of Indian life.（分数：2.00）(1).According to the passage, the films of Satyajit Ray are characterized by all of the following EXCEPT（分数：1.00）A.dventureB.honestyC.compassionD.dignity(2).The third film of the Apu Trilogy deals with all of the following themes EXCEPT（分数：1.00）A.fa
23、ilure at a major goalB.loss of a spouseC.struggle against povertyD.going home after a long absence二、Passage 2(总题数：6，分数：10.00)1 Coral reefs are one of the earths most ancient ecosystems and also the richest, most diverse, and most beautiful ecosystems in any ocean. The huge cities built by corals pro
24、vide shelter and food for billions of other marine animals. A quarter of all sea creatures depend on coral reefs during some part of their life cycles.2 In the past century, the oceans surface temperature has risen an average of 1.8 degrees Fahrenheit. It has taken only this slight increase in sea-s
25、urface temperature to sicken the worlds coral reefs. The brilliant blue, purple, green, gold, and pink have begun to disappear as a disease called bleaching drains the color and the life from the reefs. Scientists have reported mass bleaching on reefs in the Caribbean, in southern Japan, in Indonesi
26、a, and on the worlds largest coral reef, the Great Barrier Reef, where the corals have bleached to a dirty white.3 Bleaching has killed more corals than all other causes combined. More than 16 percent of the worlds corals have sickened and died from bleaching. Millions of aquatic animals that depend
27、 directly or indirectly on corals have died as well-anemones, sponges, mollusks, shrimp, crabs, fish, turtles, and seabirds-making the loss of corals a catastrophe for the natural world.（分数：2.00）(1).Which of the following is NOT stated about coral reefs?（分数：1.00）A.They are among the oldest ecosystem
28、s in the world.B.They have caused sea-surface temperatures to rise.C.They are brilliantly colored when they are healthy.D.They supply shelter for a diversity of marine lif(2).All of the following are effects of the bleaching of coral reefs EXCEPT（分数：1.00）A.fading colorsB.loss of dependent animalsC.d
29、eath of coralsD.rising water levelPolitical parties are necessary in the exercise of democracy in nation states. The enlargement of the electorate-the body of qualified voters-has increased the importance of parties to the point where it is practically impossible for a candidate to get elected witho
30、ut the support of a party organization. This is because the variety of issues facing nation states has complicated the problem of creating an informed electorate that can use its vote responsibly. The job of influencing popular opinion through newspapers, television, the Internet, and other mass med
31、ia is too complicated and costly for an individual candidate to undertake. Although individual candidates continue to appear at public meetings-to answer questions and shake hands with voters- the influencing of public opinion on a mass scale has become a specialized technique. Building political su
32、pport on a nation-wide scale carries a high cost, and it requires nationally organized and well-financed parties. Party organizations thus have come to occupy a prominent place in the functioning of democracies.（分数：2.00）(1).According to the passage, what is one effect of the enlargement of the elect
33、orate?（分数：1.00）A.There are more political parties than ever before.B.Candidates need political parties to get elected.C.Political parties control all forms of mass media.D.It is impossible to have a perfect democracy.(2).All of the following are given as reasons for the necessity of political partie
34、s EXCEPT:（分数：1.00）A.Influencing popular opinion through the media is a large and complex job.B.It is difficult to inform voters about the variety of important issues.C.Building nation-wide support is too expensive for individual candidates.D.Voters prefer candidates that express the values of an est
35、ablished party.1 What made Native American and European subsistence cycles so different from one another in colonial America had less to do with their use of plants than with their use of animals. Domesticated grazing animals and the plow were the most distinguishing characteristics of European agri
36、cultural practices. The Native Americans relationship to the deer, moose, and beaver they hunted was far different from that of the Europeans to the pigs, cows, sheep, and horses they owned.2 Where Natives had contented themselves with burning the woods and concentrating their hunting in the fall an
37、d winter months, the English sought a much more total and year-round control over their animals lives. The effects of that control could be seen in most aspects of New Englands rural economy. By the end of the colonial period, the Europeans were responsible for a host of changes in the New England l
38、andscape: endless miles of fences, a system of country roads, and new fields covered with grass, clover, and buttercups.（分数：2.00）(1).What point does the author make about Native Americans and Europeans?（分数：1.00）A.They competed over the same plants and animals.B.They both tried to control New England
39、s animals.C.They taught each other techniques for hunting animals.D.They differed in their attitudes toward animals.(2).All of the following were agricultural practices of Europeans in New England EXCEPT（分数：1.00）A.constructing fencesB.burning the woodsC.plowing fieldsD.planting grass and clover3.The
40、 music called “blues“ has deep roots in African-American history. In the Mississippi Delta, men working in the cotton fields and on construction crews chanted and sang as they worked. These work songs and “field hollers“ expressed the pain and sorrow of the workers and helped to pass the time. Durin
41、g the evenings, the workers sang these songs, accompanied by guitar and banjo. Live dance bands started playing blues songs, and female singers further developed the style. The blues spread from its birthplace in the Mississippi Delta to other rural areas of the South. Eventually, the music traveled
42、 northward with African Americans who moved from the South to cities in the North. The blues contributed to the development of other types of music, such as the big-band jazz of the 1930s.According to the passage, all of the following statements are true EXCEPT:（分数：1.00）A.Field hollers and songs hel
43、ped workers to pass the time.B.Blues music originated in the Mississippi Delta.C.Dance bands in northern cities invented the blues.D.The blues had an influence on big-band jazz musi1 Landscape architects design landscapes in residential areas, public parks, and commercial zones. They are hired by ma
44、ny types of organizations, from real estate firms starting new developments to municipalities constructing airports or parks. They usually plan the arrangement of vegetation, walkways, and other natural features of open spaces.2 In planning a site, landscape architects first consider the nature and
45、purpose of the project, the funds available, and the proposed elements. Next, they study the site and map such features as the slope of the land, the positions of existing buildings, existing utilities, roads, fences, walkways, and trees. Then, working either as the leader of a design team or in con
46、sultation with the project architect or engineer, they draw up plans to develop the site. If the plans are approved, they prepare working drawings to show all existing and proposed features. They outline the methods of constructing features and draw up lists of building materials.3 Newcomers to the
47、field usually start as junior drafters, tracing drawings and doing other simple drafting work for architectural, landscape architectural, or engineering firms. After two or three years, they can carry a design through all stages of development. Highly qualified landscape architects may become associ
48、ates in private firms, but usually those who progress this far open their own offices.（分数：2.00）(1).Landscape architects do all of the following EXCEPT（分数：1.00）A.design landscapes in residential and commercial zonesB.decide where to build walkways in public parksC.draw or paint scenes from the natura
49、l environmentD.plan the arrangement of vegetation and other natural features(2).All of the following are listed as stages in the landscape design process EXCEPT（分数：1.00）A.thinking about the projects purpose and the fundingB.building a fence around the construction siteC.making drawings that include old and new featuresD.preparing lists of building materials and methods4.In the 1930s, the Great Plains of North America came to be called the Dust Bowl after several large dust storms destroyed the region. The Dust Bowl was the result of human activity and bad weather th
