单选题三条直线能够把一个圆的内部最多分成多少个没有重叠部分的区域?

单选题. ①Astronomers studying a certain kind of supernova (exploding star) were surprised to find the supernovas were fainter than expected. ②Seeking explanations, they discounted the possibility that cosmic dust might be screening out some of the light, because it would filter out blue light more than red, causing the supernovas to appear redder than they really are. ③Also, unless spread very smoothly throughout space, the dust would introduce large variations in the measurements. ④Another possibility is gravitational lensing, the bending of light rays as they skirt galaxies en route. ⑤Such lensing occasionally causes brightening, but most often it contributes to the dimness of distant supernovas. ⑥Calculations show, however, that this effect becomes important only for sources more distant than the supernovas studied.45. According to the passage, the astronomers rejected gravitational lensing as an explanation for their findings because ______

单选题. ①One might assume the most admired architecture would be the best built. ②This was generally true in the past, but in the twentieth century, when new materials and new aesthetic theories often drove architects to cavalier experimentation, even celebrated architects fell short. ③When designing the Centre Georges Pompidou in Paris, Renzo Piano and Richard Rogers turned the building literally inside out. ④.Previously hidden elements such as pipes, ducts, and elevators were exposed to view—and exposed to the elements. ⑤The result might have been foreseen: after only twenty years, the building was closed for a two-year renovation. ⑥Although the authorities maintained that the unexpectedly large numbers of visitors necessitated the renovation, much of the budget was spent on refurnishing the facade.17. Which of the following best describes the function of the highlighted sentence? ______

单选题17. A decrease in face-to-face social contact can precipitate depression. Time spent using the Internet cannot be spent in face-to-face social contact, so psychologists have speculated that sharply increasing Internet use can cause depression. Studies of regular Internet users have found a significantly higher incidence of depression among those who had recently doubled the amount of time they spent using the Internet than among those whose use had not increased. Hence, the psychologists' speculation is correct. Which of the following is an assumption on which the argument depends? ______

单选题 Historian: In the Drindian Empire

单选题the unit’s digit of 7n is x and the unit’s digit of 3n is y where n is a positive integerQuantity A: |x-y|Quantity B: 3

单选题. ①The waters east of Cape Hangklip were once the center of a lucrative wild-caught abalone fishery, but illegal fishing in the mid-1990s escalated to such levels that the recreational fishery was closed in 2003. ②When abalones did not rebound, commercial fishing was also banned. ③Continue declines in abalone were attributed to poaching, but an invasion by rock lobsters during the early 1990s probably intensified the trend. ④Rock lobsters prey on sea urchins, and increased rock lobster densities coincided with significant decreases in urchins. ⑤In that area, urchins feed largely by trapping drift kelp, and in doing so provide juvenile abalone with both protective shelter and nourishment. ⑥Without urchins' presence, juvenile abalones are less likely to survive to adulthood.35. According to the passage, since the early 1990s, sea urchins in the waters east of Cape Hangklip have ______

单选题 For the first time

单选题. ①Most mammals reach sexual maturity when their growth rates are in decline, whereas humans experience a growth spurt during adolescence. ②Whether apes experience an adolescent growth spurt is still undecided. ③In the 1950s, data on captive chimpanzees collected by James Gavan appeared devoid of evidence of an adolescent growth spurt in these apes. ④In a recent reanalysis of Gavan's data, however, zoologist Elizabeth Watts has found that as chimpanzees reach sexual maturity, the growth rate of their limbs accelerates. ⑤Most biologists, however, are skeptical that this is a humanlike adolescent growth spurt. ⑥While the human adolescent growth spurt is physically obvious and affects virtually the entire body, the chimpanzee's increased growth rate is detectable only through sophisticated mathematical analysis. ⑦Moreover, according to scientist Holly Smith, the growth rate increase in chimpanzees begins when 86% of full skeletal growth has been attained, whereas human adolescence generally commences when 77 percent of full skeletal growth has occurred.26. Which of the following best describes the main idea of the passage? ______

单选题What is the total number of integers between 100 and 200 that are divisible by 3?

单选题Quantity A: The probability that event R occurs is 0.38 the probability that events R and W both occurQuantity B: 0.4

单选题. ① Architectural morphology is the study of how shifting cultural and environmental conditions produce changes in an architectural form. ②When applied to the mission churches of New Mexico exemplifying seventeenth- and eighteenth-century Spanish colonial architecture in what is now the southwestern United States, architectural morphology reveals much about how Native American culture transformed the traditional European church architecture of the Spanish missionaries who hoped to convert Native Americans to Christianity. (因为出版审核原因，书籍中涉及到“基督教”的内容均替换为“欧洲信仰”) ①Many studies of these mission churches have carefully documented the history and design of their unique architectural form, most attribute the churches' radical departure from their sixteenth-century European predecessors to local climate and a less-mechanized building technology. ②The limitations imposed by manual labor and the locally available materials of mud-brick and timber necessitated a divergence from the original European church model. ③However, the emergence of a church form suited to life in the Southwest was rooted in something more fundamental than material and technique. ④The new architecture resulted from cultural forces in both the Spanish colonial and indigenous Native American societies, each with competing ideas about form and space and different ways of conveying these ideas symbolically. ①For example, the mission churches share certain spatial qualities with the indigenous kiva, a round, partly subterranean room used by many Southwest Native American communities for important rituals. ②Like the kiva it was intended to replace, the typical mission church had thick walls of adobe (sun-dried earth and straw), a beaten-earth floor, and one or two small windows. ③In deference to European custom, the ceilings of these churches were higher than those of the traditional kiva. ④However, with the limited lighting afforded by their few small windows, these churches still suggest the kiva's characteristically low, boxlike, earth-hugging interior. ⑤Thus, although pragmatic factors of construction may have contributed to the shape of the mission churches, as earlier studies suggest, the provision of a sacred space consistent with indigenous traditions may also have been an important consideration in their design. ①The continued viability of the kiva itself in Spanish mission settlements has also been underestimated by historians. ②Freestanding kivas discovered in the ruins of European-style missionary communities have been explained by some historians as examples of "superposition". ③Under this theory, Christian domination over indigenous faiths is dramatized by surrounding the kiva with Christian buildings. ④However, as James Ivey points out, such superposition was unlikely, since historical records indicate that most Spanish missionaries, arriving in the Southwest with little or no military support, wisely adopted a somewhat conciliatory attitude toward the use of the kiva at least initially. ⑤This fact, and the careful, solitary placement of the kiva in the center of the mission-complex courtyards, suggests an intention to highlight the importance of the kiva rather than to diminish it.23. The primary purpose of the passage is to ______

单选题. ①Noting that bison herds appear to graze selectively in areas occupied by prairie dog colonies, Coppock hypothesized that the attraction is due to improved forage quality: prairie dogs' own grazing activities alter herbage dynamics, plant species composition, and nutrient cycling. ②The colonies' territory contains relatively little low-quality mature standing herbage and is characterized by communities of plants that are high in crude protein and highly digestible. ③However, such effects are not produced only by prairie dogs. ④Willms showed that sites selectively grazed by cattle had reduced standing dead plant material, altered species composition, and increased soil nitrates, ammonium, and available phosphorus. ⑤In fact, long-term, intensive use by any grazer will cause comparable changes in plant communities.29. The highlighted sentence serves primarily to ______

单选题32. Although the percentage of first graders in Almaria who were excellent readers varied little between 1995 and 2010, the percentage of first graders who had considerable difficulty reading their schoolbooks increased markedly during that period. This evidence strongly indicates that the average reading ability of first graders decreased between 1995 and 2010. Which of the following, if true, provides the strongest additional support for the argument? ______

单选题 ①Unlike most Jane Austen scholarship before 1980

单选题. ①Before feminist literary criticism emerged in the 1970s, the nineteenth-century United States writer Fanny Fern was regarded by most critics (when considered at all) as a prototype of weepy sentimentalism –a pious, insipid icon of conventional American culture. ②Feminist reclamations of Fern, by contrast, emphasize her nonsentimental qualities, particularly her sharply humorous social criticism. ③Most feminist scholars find it difficult to reconcile Fern's sardonic social critiques with her effusive celebrations of many conventional values. ④Attempting to resolve this contradiction, Harris concludes that Fern employed flowery rhetoric strategically to disguise her subversive goals beneath apparent conventionality. ⑤However, Tompkins proposes an alternative view of sentimentality itself, suggesting that sentimental writing could serve radical, rather than only conservative, ends by swaying readers emotionally, moving them to embrace social change.9. The passage suggests which of the following about the contradiction mentioned in the highlighted sentence? ______

单选题. ①The condition of scholarship devoted to the history of women in photography is confounding. ②Recent years have witnessed the posthumous inflation of the role of the hobbyist Alice Austen into that of a pioneering documentarian while dozens of notable senior figures—Marion Palfi, whose photographs of civil-rights activities in the South served as early evidence of the need for protective legislation, to name one—received scant attention from scholars. ③And, while Naomi Rosenblum's synoptic History of Women Photographers covers the subject through 1920 in a generally useful fashion, once she reaches the 1920s, when the venues, forms, applications, and movements of the medium expanded exponentially, she resorts to an increasingly terse listing of un-familiar names, with approaches and careers summarized in a sentence or two.32. The author of the passage cites Rosenblum's book most likely in order to ______

单选题If d=123.4546, and d1 is the number obtained by rounding d to the nearest hundredths, then d1=

单选题. ①Climatologists observed in 1964 that a slow warming of the surface of the North Atlantic in the 1910s and 1920s could well have been driven by a surge of warm water up the Gulf Stream. ②This Atlantic warming accompanied a global warming that by the 1940s had produced the highest global temperatures to that point in the records. ③It was so warm that statistical techniques used in the 1990s to detect the "fingerprint" of greenhouse warming in climate records also show the 1940s having greenhouse warming. ④However, no one believes enough greenhouse gases had reached the atmosphere by then to cause much of a human-induced warming. ⑤That inconsistency has led greenhouse contrarians to claim that any recent warming could be natural rather than anthropogenic.19. It can be inferred that the "contrarians" mentioned in the passage would agree with which of the statements? ______

单选题If x, y, and z are positive integers and 2x=3y=5z=7w, then the least possible value of x+y+z+w is