单选题15. Although many brands of gasoline are sold on Haibei Island, gasoline companies there sell all of the refined gasoline from Haibei seaport's only storage tank, which is always refilled with the same quality of gasoline. Therefore, the brands of gasoline for sale on Haibei may be different in name and price, but they are identical in quality. The conclusion drawn above depends on which of the following assumptions? ______

单选题 ①As of late 1980s

单选题. ①The relevance of the literary personality—a writer's distinctive attitudes, concerns, and artistic choices—to the analysis of a literary work is being scrutinized by various schools of contemporary criticism. ②Deconstructionists view the literary personality, like the writer's biographical personality, as irrelevant. ③The proper focus of literary analysis, they argue, is a work's intertextuality (interrelationship with other texts), subtexts (unspoken, concealed, or repressed discourses), and metatexts (self-referential aspects), not a perception of a writer's verbal and aesthetic "fingerprints." ④New historicists also devalue the literary personality, since, in their emphasis on a work's historical contexts, they credit a writer with only those insights and ideas that were generally available when the writer lived. ⑤However, to readers interested in literary detective work-say scholars of classical (Greek and Roman) literature who wish to reconstruct damaged texts or deduce a work's authorship—the literary personality sometimes provide vital clues.31. The passage is primarily concerned with ______

单选题一个销售员以$100买进了一件夹克，他设定卖价等于在买价的基础上加上50％的卖价；在销售这件夹克的时候，这个人又在卖价的基础上打2折出售，那么这个销售员的净利润是多少?

单选题Quantity A: 45-47Quantity B: 47-25

单选题n percent of 1007 is

单选题如果某个多边形P的内角和是平行四边形O内角和的5倍，那么多边形P一共有多少个顶点?

单选题Which one is greater between the units digit of 7123 and the units digit of 3321?

单选题Which of the following numbers is NOT the sum of three consecutive odd integers?

单选题 ①In the 1980s

单选题. ①The ability to recognize specific individuals has profound implications for the evolution of complex social behaviors such as reciprocal altruism. ②Many researchers assumed that recognition of individuals, a phenomenon predominantly observed in laboratory studies of fish, might also operate extensively in free-ranging fish populations, where it could underpin complex interactions. ③In fact, evidence of individual recognition in free-ranging fish populations is equivocal. ④The possibility exists that for many species, individual recognition observed in the laboratory might be an artifact of experimental designs, which enforce prolonged interaction between individuals and which prevent the diluting effects on social structure of immigration into and emigration from the shoal, factors that in nature would erode group stability and prevent the learning of individual identities.17. The passage is primarily concerned with ______

单选题 ① Pueblo Bonito

单选题三角形的两条边分别是4和6Quantity A: 三角形的面积SQuantity B: 13

单选题Rolling a number cube with faces numbered 1 to 6 similar to a 6-sided die is an experiment with 6 possible outcomes: 1, 2, 3, 4, 5 or 6. If we toss two number cubes simultaneously, what is the possibl

单选题7. Princessfish are a species of coral-reef fish that are captured alive by divers who first stun the individual fish by squirting a certain poison at them. Since the divers limit their catch to a few individuals and take care not to overfish, the divers' continuing activities will clearly not result in serious harm to populations of princessfish. Which of the following, if true, most seriously weaken the argument given? ______

单选题 ①Carla L. Peterson's Doers of the Word (1997)

单选题Quantity A: the root of x2+2x+1=0Quantity B: the root of x2-4x+3=0

单选题 ①Archaeologists studying Bonito phase (ca. A.D