每天做一些标准的GRE阅读练习，有助于大家在GRE考试的复习过程中不断地进行练习和总结。希望大家在进行GRE阅读练习时，充分运用平时所积累的知识，这样才能有效果。
Although pathogenic organisms constantly alight on the skin, they find it a very unfavorable environment and, in the absence of injury, have great difficulty colonizing it. This “self-sterilizing” capacity of the skin results from the tendency of all well-developed ecosystems toward homeostasis, or the maintenance of the status quo.
Species that typically live in soil, water, and elsewhere rarely multiply on the skin. Undamaged skin is also unfavorable to most human pathogens. The skin is too acid and too arid for some species. The constant shedding of the surface skin layers further hinders the establishment of invaders. The most interesting defense mechanism, however, results from the metabolic activities of the resident flora (resident flora: 聚居植物群). Unsaturated fatty acids, an important component of the lipids in sebum collected from the skin surface, inhibit the growth of several bacterial and fungal cutaneous pathogens. These acids are a metabolic product of certain gram-positive members of the cutaneous community, which break down the more complex lipids in freshly secreted sebum.
17. The primary purpose of the passage is to
(A) offer an analysis of metabolic processes
(B) detail the ways in which bacteria and fungi can be inhibited
(C) describe mechanisms by which the skin protects itself against pathogens
(D) analyze the methods whereby biological systems maintain the status quo
(E) provide a specific example of the skin’s basic defenses against pathogens
18. The “resident flora” mentioned in line 16 refer to
(A) “Unsaturated fatty acids” (line 17)
(B) “sebum collected from the skin surface” (lines 18-19)
(C) “bacterial and fungal cutaneous pathogens” (lines 19-20)
(D) “certain gram-positive members of the cutaneous community” (lines 21-22)
(E) “more complex lipids” (lines 23)
19. Among the natural defenses of the skin against pathogenic organisms are all of the following EXCEPT the
(A) dryness of the skin
(B) acidity of the skin
(C) tendency of the pathogens toward homeostasis
(D) shedding of surface layers of the skin
(E) metabolic breakdown of lipids
20. The author presents her material in which of the following ways?
(A) Stating a problem and then supplying a solution
(B) Presenting a phenomenon and then analyzing reason for it
(C) Providing information and then drawing a conclusion from it
(D) Making a general statement and then arguing by analogy
(E) Making an inference and then developing it by illustration
“Masterpieces are dumb,” wrote Flaubert, “They have a tranquil aspect like the very products of nature, like large animals and mountains.” He might have been thinking of War and Peace, that vast, silent work, unfathomable and simple, provoking endless questions through the majesty of its being. Tolstoi’s simplicity is “overpowering (overpowering: adj.无法抵抗的, 压倒性的),” says the critic Bayley, “disconcerting,” because it comes from “his casual assumption that the world is as he sees it.” Like other nineteenth-century Russian writers he is “impressive” because he “means what he says,” but he stands apart from all others and from most Western writers in his identity with life, which is so complete as to make us forget he is an artist. He is the center of his work, but his egocentricity is of a special kind. Goethe, for example, says Bayley, “cared for nothing but himself. Tolstoi was nothing but himself.”
For all his varied modes of writing and the multiplicity of characters in his fiction, Tolstoi and his work are of a piece (of a piece: adj.一致的). The famous “conversion” of his middle years, movingly recounted in his Confession, was a culmination of his early spiritual life, not a departure from it. The apparently fundamental changes that led from epic narrative to dogmatic parable, from a joyous, buoyant attitude toward life to pessimism and cynicism, from War and Peace to The Kreutzer Sonata, came from the same restless, impressionable depths of an independent spirit yearning to get at the truth of its experience. “Truth is my hero,” wrote Tolstoi in his youth, reporting the fighting in Sebastopol. Truth remained his hero—his own, not others’, truth. Others were awed by Napoleon, believed that a single man could change the destinies of nations, adhered to meaningless rituals, formed their tastes on established canons of art. Tolstoi reversed all preconceptions; and in every reversal he overthrew the “system,” the “machine,” the externally ordained belief, the conventional behavior in favor of unsystematic, impulsive life, of inward motivation and the solutions of independent thought.
In his work the artificial and the genuine are always exhibited in dramatic opposition: the supposedly great Napoleon and the truly great, unregarded (unregarded: adj.不受注意的) little Captain Tushin, or Nicholas Rostov’s actual experience in battle and his later account of it. The simple is always pitted against (be pitted against: 被置于与…的对抗中) the elaborate, knowledge gained from observation against assertions of borrowed faiths. Tolstoi’s magical simplicity is a product of these tensions; his work is a record of the questions he put to himself and of the answers he found in his search. The greatest characters of his fiction exemplify this search, and their happiness depends on the measure of their answers. Tolstoi wanted happiness, but only hard-won happiness, that emotional fulfillment and intellectual clarity which could come only as the prize of all-consuming effort. He scorned lesser satisfactions.
21. Which of the following best characterizes the author’s attitude toward Tolstoi?
(A) She deprecates the cynicism of his later works.
(B) She finds his theatricality artificial.
(C) She admires his wholehearted sincerity.
(D) She thinks his inconsistency disturbing.
(E) She respects his devotion to orthodoxy.
22. Which of the following best paraphrases Flaubert’s statement quoted in lines 1-4?
(A) Masterpiece seem ordinary and unremarkable from the perspective of a later age.
(B) Great works of art do not explain themselves to us any more than natural objects do.
(C) Important works of art take their place in the pageant of history because of their uniqueness.
(D) The most important aspects of good art are the orderliness and tranquility it reflects.
(E) Masterpieces which are of enduring value represent the forces of nature.
23. The author quotes from Bayley (line 8-20) to show that
(A) although Tolstoi observes and interprets life, he maintains no self-conscious distance from his experience
(B) the realism of Tolstoi’s work gives the illusion that his novels are reports of actual events
(C) unfortunately, Tolstoi is unaware of his own limitation, though he is sincere in his attempt to describe experience
(D) although Tolstoi works casually and makes unwarranted assumption, his work has an inexplicable appearance of truth
(E) Tolstoi’s personal perspective makes his work almost unintelligible to the majority of his readers
24. The author states that Tolstoi’s conversion represented
(A) a radical renunciation of the world
(B) the rejection of avant-garde ideas
(C) the natural outcome of his earlier beliefs
(D) the acceptance of religion he had earlier rejected
(E) a fundamental change in his writing style
25. According to the passage, Tolstoi’s response to the accepted intellectual and artistic values of his times was to
(A) select the most valid from among them
(B) combine opposing viewpoints into a new doctrine
(C) reject the claims of religion in order to serve his art
(D) subvert them in order to defend a new political viewpoint
(E) upset them in order to be faithful to his experience
26. It can be inferred from the passage that which of the following is true of War and Peace?
(A) It belongs to an early period of Tolstoi’s work.
(B) It incorporates a polemic against the disorderliness of Russian life.
(C) It has a simple structural outline.
(D) It is a work that reflects an ironic view of life.
(E) It conforms to the standard of aesthetic refinement favored by Tolstoi’s contemporaries.
27. According to the passage, the explanation of Tolstoi’s “magical simplicity” (line 55) lies partly in his
(A) remarkable power of observation and his facility in exact description
(B) persistent disregard for conventional restraints together with his great energy
(C) unusual ability to reduce the description of complex situations to a few words
(D) abiding hatred of religious doctrine and preference for new scientism
(E) continuing attempt to represent the natural in opposition to the pretentious
答案：17-27：CDCBCBACEAE
>>点击查看GRE阅读专题，阅读更多相关文章！
-
如何两个月拿下GRE？
每年都有无数小伙伴在纠结一个问题，两个月备考GRE到底够不够？事实上，全身心准备的话，完全够了。下面我们一起来看看如何备考，有哪些值得我们学习呢？
- GRE的文章源于哪里?
- GRE考前冲刺复习做到这5点提分最有效
- 2017年GRE考试报名开始啦！最新考试时间官方公布快来抢考位
- ETS官网查不了GRE分数怎么办？