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1、2022年安徽省亳州市大学英语6级大学英语六级测试卷(含答案)学校:_ 班级:_ 姓名:_ 考号:_一、2.Reading Comprehension (Skimming and Scanning)(20题)1.Scientists hope that by 2040 the temperature will still be stable by the cooperation among some countries.A.Y B.N C.NG2. What kind of animal affected by man-made chemicals is not referred in the
2、 passage?A.Polar bears. B.Mammals. C.People. D.Birds.3.With the help of the government and the world and their own efforts, women of the Peruvian Andes will soon be able to go back home.A.Y B.N C.NG4.The program aimed at creating a single, federated sign-on system is called _.5.In most circumstances
3、, compared with notes and coins the predominance of a phone or a smart card involves _.A.fastness B.convenience C.popularity D.anonymity6.In 2003, extreme heat waves caused more than 20,000 and 1,500 deaths in_ respectively.7.The author stepped out of the lift at _.8.How Birds Find Way Home?The abil
4、ity of birds to return to a familiar place from any distance is a remarkable feat of nature. For centuries people have taken advantage of this ability in homing pigeons by using them to take messages from distant points back to familiar sites. Homing pigeons are domesticated non-migratory birds with
5、 an instinct to return to their lofts (nesting sites) that is improved with training and by selective breeding. Training is started at short distances from the nesting site; over time, this distance is gradually increased to hundreds of miles from its loft at a completely unfamiliar location and it
6、can fly in the direction of home within a minute or two of its release. How does this extraordinary behavior. work?Understanding homing behavior. is one of the greatest challenges to ornithologists (鸟类学家). Fortunately, because they are able to carefully control the conditions under which the pigeons
7、 are released, researchers have been able to learn a great deal about how the birds navigate their way home.Although homing ability has been fostered in pigeons by careful breeding and selecting of stock, it appears that training is not always necessary: Many species of wild birds perform. similarly
8、 remarkable feats. One such bird is the migratory Manx Shearwater (剪嘴鸥). Built like tiny albatrosses, these seabirds spend most of their lives skimming over the ocean surface far from the sight of land. They come ashore only to nest in burrows, which they dig in the ground on offshore islands in ord
9、er to be safe from predators. The ease of locating and observing their nests make shearwaters ideal subjects for homing experiments.Great Bird NavigatorsMany migratory birds are remarkably faithful to previous nesting and overwintering places. Though a bird might be able to come close to these sites
10、 merely by flying in a general direction during the course of migration, at some point more sophisticated navigating techniques must take over to guide the bird to its precise destination.Many animals are able to find their way home. One way of doing this is to directly sense the goalto see, hear, o
11、r smell it. Another way is to memorize the details of the outward journey and then reverse the route based on an integration of that information. Birds, however, apparently rely on a completely different process to find their way. To explain bird navigation, we have what is known as the map-and-comp
12、ass theory.The compass component of this theory gives direction-north, south, east, west; the map component tells the bird where it is, or gives locality. Scientists have learned a great deal more about the compass component than they have about mapping. They know that birds have several means of de
13、termining compass directions, but unfortunately, they still have no satisfactory explanation for how birds use biological maps to guide them to a precise location from an unfamiliar starting point.Bird Sun NavigatorsSome observations indicate that birds might use the sun as, a visual cue to determin
14、e compass directions. Starlings (八哥), for example, seem able to negotiate the proper direction only if they have a view of the clear sky and sun; cloud cover seems to induce confusion. In an experiment in which the suns apparent position was changed with mirrors attached to an orientation cage conta
15、ining starlings, observers noted that the direction of the starlings hopping, which earlier had been correlated to the direction that chose to migrate, was shifted accordingly.Even birds that migrate exclusively at night pay considerable attention to the sun. At first this may seem odd because, afte
16、r all, the sun is not visible to the nocturnal (夜间活动的) birds when they are flying. On the other hand, it is a predominant feature in the sky at a time of day (dusk)when birds may well be making decisions about wA.Y B.N C.NG9.Rice is one of the major GM crops containing genes which help to either resist insect or tolerate weed-killing herbicides
