Gre阅读真题200篇 brief contents
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Allen and Wolkowitz’s researchAllen and Wolkowitz’s research challenges the common claim that homework—waged labor performed at home for a company—is primarily a response to women workers’ needs and preferences. By focusing on a limited geographical area in order to gather in-depth information, the authors have avoided the methodological pitfalls that have plagued earlier research on homework. Their findings disprove accepted notions about homeworkers: that they are unqualified for other jobs and that they use homework as a short-term strategy for dealing with child care. The authors conclude that the persistence of homework cannot be explained by appeal to such notions, for, in fact, homeworkers do not differ sharply from other employed women. Most homeworkers would prefer to work outside the home but are constrained from doing so by lack of opportunity. In fact, homework is driven by employers’ desires to minimize fixed costs: homeworkers receive no benefits and are paid less than regular employees. 24. The passage is primarily concerned with (A) advocating a controversial theory (B) presenting and challenging the results of a study (C) describing a problem and proposing a solution (D) discussing research that opposes a widely accepted belief（D） (E) comparing several explanations for the same phenomenon 25. According to the passage, which of the following has been generally believed about homework? (A) The benefits of homework accrue primarily to employers rather than to homeworkers. (B) Homework is prevalent predominantly in rural areas. (C) Homework is primarily a response to the preferences of women workers. (D) Few homeworkers rely on homework for the majority of their family income.（C） (E) Most homework is seasonal and part-time rather than full-time and year-round. 26. Allen and Wolkowitz’s research suggests that each of the following is true of most homeworkers EXCEPT: (A) They do not necessarily resort to homework as a strategy for dealing with child care. (B) Their family situations are not unlike those of other employed women. (C) They are as well qualified as women who work outside the home. (D) They perform professional-level duties rather than manual tasks or piecework.（D） (E) They do not prefer homework to employment outside the home. 27. The passage suggests which of the following about previous research on homework? (A) It was conducted primarily with women who did not have extensive household responsibilities or care for small children at home. (B) It was conducted with homeworkers and companies over a large geographical area. (C) It indicated that women homeworkers had numerous opportunities to work outside the home. (D) It indicated that homeworkers usually work for companies that are close to their homes.（B） (E) It indicated that homework was financially advantageous to large companies.
The whole biosphere, like the individual organisms that live inside it, exists in a chemically dynamic state (dynamic state: 动态). In this homeostatic system, a great number of organic compounds are synthesized, transformed, and decomposed continuously; together, these processes constitute the major parts of the carbon cycle. For the smooth operation of this cycle, degradation is just as important as synthesis: the green plants produce great quantities of polymers, such as cellulose, and innumerable other compounds like alkaloids, terpenes, and flavonoids, that green plants cannot use as sources of energy during respiration. The release of the carbon in these compounds for recycling depends almost entirely on the action of both aerobic and anaerobic bacteria and certain types of fungi. Some bacteria and fungi possess the unique and extremely important biochemical asset of being able to catalyze the oxidation of numerous inert products, thereby initiating reaction sequences that produce carbon dioxide and so return much carbon to a form that actively enters into life cycles once again. 25. The passage contains information that would answer which of the following questions about the carbon cycle? I. What are some of the compounds that are broken down in the carbon cycle? II. Why are some compounds that are involved in the carbon cycle less reactive than others? III. What role do bacteria and fungi play in the carbon cycle? (A) I only (B) II only (C) III only (D) I and II only（E） (E) I and III only 26. The author implies that which of the following is the primary reason that degradation is as important as synthesis to the smooth operation of the carbon cycle? (A) Most of the polymers and organic compounds found in the plant kingdom are chemically unstable. (B) The synthesis of some organic material deprives life processes of an energy source. (C) Decomposition permits the recycling of carbon that would otherwise be fixed in certain substances. (D) Many organisms cannot use plants as a source of food, but can feed on bacteria and fungi.（C） (E) Bacteria and fungi could not survive if some carbon compounds were not degraded. 27. The author’s contention about the importance of bacteria and fungi in the production of energy for life processes would be most clearly strengthened if which of the following were found to be true? (A) Both aerobes and anaerobes provide sources of energy through the decomposition of organic material. (B) Most compounds containing carbon are unavailable as energy sources except to some bacteria and fungi. (C) Bacteria and fungi break down inert material in ways that do not involve oxidation. (D) Many compounds remain inert, even in the presence of bacteria and fungi.（B） (E) Bacteria and fungi assist in the synthesis of many organic compounds. |