This species has nearly died out because its habitat is being destroyed.A:turned dead B:passed byC:carried away D:become extinct
This species has nearly died out because its habitat is being destroyed.
A:turned dead
B:passed by
C:carried away
D:become extinct
B:passed by
C:carried away
D:become extinct
参考解析
解析:本句意思:由于栖息地遭到破坏,这一物种几乎已经灭绝。die out意思为“灭绝,绝迹”, 与become extinct(灭绝,绝种)意思相近。turn dead死掉;pass by经过;carry away带走。
相关考题:
spare means not to damage or harm someone or sth. although others are being damaged or destroyed.() 此题为判断题(对,错)。
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We are obliged to them because some of these languages have since vanished, as the peoples who spoke them died out or became assimilated and lost their native languages.
The loss of biological diversity has become most spectacularly noticeable in extinction or decline of populations of large and well-known animals.Many animal species have become extinct since the 1700’s, among them the California grizzly bear, the dodo, and the passenger pigeon.Hundreds of other animal species are threatened.In North America, endangered species include the black-footed ferret, the California condor, the desert tortoise, and the whooping crane.Most species in danger of extinction anywhere in the world are suffering from the intrusion (侵入) of human beings.The Asian elephant, for example, has become an endangered species due to the expansion of the human population throughout its range in southern Asia.In Africa, the African elephants are being killed off for their tusks.Monkeys and other primates throughout the world are threatened by hunting, capture for medical use, and the destruction of their habitats.And the rhinoceroses, lions, and other large mammals of the African savanna (grassy plains with scattered trees) compete for land and life with some of the most rapidly growing human populations in the world.The loss of biological diversity is most severe, however, in the tropical rain forests.The forests of the tropics are particularly vulnerable to disturbance because the soils have a low capacity for retaining nutrients.Most of the forests’ nutrient elements are held in the tissues of plants.When loggers and farmers destroy existing plant cover, the nutrients are washed from the land into streams, and the land itself becomes less able to support life.Destruction of these forests destroys the habitat of hundreds, sometimes thousands, of species from such creatures as the howler monkey and indigo macaw, to less visible species of plants, insects, and microbes, many of which are not yet known to science.1.The author points out that species extinction ().A.is most noticeable in North AmericaB.is mainly taking place among large animalsC.quickened with industrialization of the societyD.never took place before the 1700’s2.Which of the following is NOT mentioned with regard to human intrusion?A.Elephants are killed off for their tusksB.Some primates are hunted for medical useC.Growing human population results in the competition for land and life among animalsD.Men live increasingly on animals as their source of food.3.The chief cause of the gradual disappearance of biological diversity is ().A.human crueltyB.human interferenceC.the increase of human populationD.the disappearance of the forests4.In tropical forests,().A.animals live a hard life due to competitionB.a lot of species die out for lack of foodC.rains constitute the major threat to speciesD.a greater number of animals are yet to be known5.It can be inferred that species extinction ().A.proceeds of a faster rate than noticeableB.is the worst among well-known animalsC.is the most severe in AfricaD.is chiefly due to competition among species
Refer to the exhibit. Network 10.0.0.0/8 is being advertised to autonomous system 65550 via both external links. Which statement about the preferred path to the 10.0.0.0/8 network is true? () A. Router R2 will be preferred because it has the higher neighbor IP address.B. Router R2 will be preferr ed because its neighbor has a lower autonomous system number.C. Router R1 will be preferred because it has a lower local preference.D. Router R2 will be preferred because it has a higher local preference.E. Router R1 will be preferred because its nei ghbor has the higher autonomous system number.F. Router R1 will be preferred because it has the lower neighbor IP address.
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A smart windows is smart mainly because_____.A.it can change its size.B.it can change its structure.C.it can change the voltage of electricity.D.it has a sort of memory.
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This species has nearly died out because its habitat is being destroyed.A:turned deadB:passed byC:carried awayD:become extinct
This species has nearly died out because its habitat is being destroyed.A:turned deadB:passed byC:carried away D:become extinct
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This kind of animals are on the verge of extinction,because so many are being killed for their fur.A:drying up B:dying out C:being exported D:being transplanted
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问答题Despite the basic biological, chemical, and physical similarities found in all living things, a diversity of life exists not only among and between species but also within every natural population. The phenomenon of diversity has had a long history of study because so many of the variations that exist in nature are visible to the eye. 1) It has been suggested that sexual reproduction became the dominant type of reproduction among organisms because of its inherent advantage of variability, which is the mechanism that enables a species to adjust to changing conditions.New variations are potentially present in genetic differences, but how preponderant a variation becomes in a gene pool depends upon the number of offspring the mutants or variants produce (differential reproduction). 2)It is possible for a genetic novelty (new variation) to spread in time to all members of a population, especially if the novelty enhances the population’s chances for survival in the environment in which it exists.Thus, when a species is introduced into a new habitat, it either adapts to the change by natural selection or by some other evolutionary mechanism or else it eventually dies off. Because each new habitat means new adaptations, habitat changes have been responsible for the millions of different kinds of species and for the heterogeneity within each species. The total number of animal and plant species is estimated at between 2,000,000 and 4,500,000; authoritative estimates of the number of extinct species range from 15,000,000 up to 16,000,000,000. 3)Although the use of classification as a means of producing some kind of order out of this staggering number of different types of organisms appears as early as the book of Genesis—with references to cattle, beasts, fowl, creeping things, trees, etc.—the first scientific attempt at classification is attributed to the Greek philosopher Aristotle, who tried to establish a system that would indicate the relationship of all things to each other.He arranged everything along a scale, or “ladder of nature”, with nonliving things at the bottom; plants were placed below animals, and man was at the top. 4)Other schemes that have been used for grouping species include large anatomical similarities, such as wings or fins, which indicate a natural relationship, and also similarities in reproductive structures. 5)At the present time taxonomy is based on two major assumptions: one is that similar body construction can be used as a criterion for a classification grouping; the other is that, in addition to structural similarities, evolutionary and molecular relationships between organisms can be used as a means for determining classification.
问答题The Importance of being Interested 1) Now I have recalled these beginnings of the careers of Franklin, Darwin and Mozart because they strikingly illustrate a profound psychological truth the significance of which can scarcely be overestimated. 2) It is fl truth, to be sure, that has long been partially recognized. 3)But its full meaning has not been--and could not be—appreciated until quite recently. 4)Only within the past few years has scientific research effected various discoveries which make its complete recognition possible and of supreme importance—of such importance that practical application of the principles involved would make for an immediate and stupendous increase in human happiness, efficiency, and welfare. 5)Stated briefly, the truth in question is that success in life, meaning thereby t he accomplishment of results of real value to the individual and to society, depends chiefly on sustained endeavor springing out of a deep and ardent interest in the tasks of one's chosen occupation.
单选题The writers of the Constitution worked out the Constitution worked out the checks and balances in order to()Aprevent the government from misusing its powerBprevent the government from being strongCpacify those who opposed the ConstitutionDmeet the demands of small states.
单选题Which is the correct description of a pinned buffer in the database buffer cache()AThe buffer is currently being accessed.BThe buffer is empty and has not been used.CThe contents of the buffer have changed and must be flushed to the disk by the DBWn process. DThe buffer is a candidate for immediate aging out and its contents are synchronized with the block contents on the disk.
单选题Which of the following is the best version of sentences 10 and 11 (reproduced below) ?It is easy to see why this disease has been dismissed and ignored. Its because of it’s vagueness and mystery.AThis disease has been dismissed and ignored because of its vagueness and mystery.BIt is easy to see why this disease has been dismissed and ignored. It’s because of the vagueness and the mystery.CVagueness and mystery dismiss and ignore this disease.DWhy this disease has been dismissed and ignored is because of its vagueness and mystery.EIt is easy for you to see why this disease has been dismissed and ignored. It is because of the vagueness and mystery.
单选题Which of the following statement is true, according to the above message?ASingapore has lost 28 percent of its native forest habitat since 1819.BSingapore has lost nearly 95 percent of its overall biodiversity since 1819.CAll of Singapore’s surviving species are concentrated in one-quarter of the country’s total area.DMost of Singapore’s surviving species are concentrated in land designated as forest reserves.
填空题One of the purposes of reforestation projects is to protect the habitat and prevent species loss.____
单选题Which statement most accurately describes the difference between the two passages?APassage 1 deals less directly with the exportation of chimpanzees than does Passage 2.BPassage 1 is less concerned with the interaction between man and the land than is Passage 2.CPassage I pertains to a species in its indigenous habitat while Passage 2 addresses the same animal in nonnative settings.DPassage I ends with an expression of optimism and Passage 2 does not.EPassage I introduces a species and describes its status worldwide, while Passage 2 limits its discussion of that species to its activities in the Northern Hemisphere.
问答题Practice 6 Yet just as we are beginning to recognize the tremendous diversity of life in these areas, along with the potential benefits newly found species may hold for human society in the form of potential food products and new medicines, they are at risk of being lost forever. With enhanced ability both to identify where these species-rich areas are located and to trawl in deeper water than before, commercial fishing vessels are now beginning to reach down with nets the size of football fields, catching everything in their path while simultaneously crushing fragile corals and breaking up the delicate structure of reefs and seamounts that provide critical habitat to the countless species of fish and other marine life that inhabit the deep ocean floor. Because deep sea bottom trawling is a recent phenomenon, the damage that has been done is still limited. If steps are taken quickly to prevent this kind of destructive activity from occurring on the high seas, the benefits both to the marine environment and to future generations are incalculable. And they far outweigh the short-term costs to the fishing industry.