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GRE阅读(No. 2—No. 9)经典---3
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24. On the basis of the passage, it can be inferred that the author would agree with which of the following statements concerning technological development? (A) The government should own technological operations. (B) The effect of technological development cannot be controlled. (C) Some technological developments are beneficial. (D) The current state of technological development results in a good allocation of resources. (E) Applications of technological developments are criminally destructive. The whole biosphere, like the individual organisms that live inside it, exists in a chemically dynamic state. 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) 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. (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. (E) Bacteria and fungi assist in the synthesis of many organic compounds. No. 2-2 SECTION A Even as the number of females processed through juvenile courts climbs steadily, an implicit consensus remains among scholars in criminal justice that male adolescents define the delinquency problem in the United States. We suggest two reasons why this view persists. First, female adolescents are accused primarily of victimless crimes, such as truancy, that do not involve clear-cut damage to persons or property. If committed by adults, these actions are not even considered prosecutable; if committed by juvenile males, they have traditionally been looked on leniently by the courts. Thus, ironically, the plight of female delinquents receives little scrutiny because they are accused of committing relatively minor offenses. Second, the courts have long justified so-called preventive intervention into the lives of young females viewed as antisocial with the rationale that women are especially vulnerable. Traditional stereotypes of women as the weaker and more dependent sex have led to earlier intervention and longer periods of misdirected supervision for female delinquents than for males. 17. Which of the following statements best expresses the irony pointed out by the authors in lines 13-16 of the passage? (A) Female delinquents tend to commit victimless crimes more frequently than their male counterparts. (B) The predicament of male delinquents receives more attention than that of females because males are accused of more serious crimes. (C) Adults are frequently punished less severely than adolescents for committing more serious crimes. (D) The juvenile justice system cannot correct its biases because it does not even recognize them. (E) Although the number of female delinquents is steadily increasing, the crimes of which they are accused are not particularly serious. 18. It can be inferred from the passage that the authors believe traditional stereotypes of women to be (A) frequently challenged (B) persistently inexplicable (C) potentially harmful (D) rapidly changing (E) habitually disregarded 19. The passage suggests that scholars in criminal justice could be criticized for which of the following? (A) Underestimating the seriousness of juvenile crime (B) Rationalizing the distinction made between juveniles and adults in the legal system (C) Concerning themselves too little with the prevention of juvenile delinquency (D) Focusing on those whose crimes have involved damage to persons or property (E) Failing to point out injustices in the correctional system Scattered around the globe are more than one hundred regions of volcanic activity known as hot spots. Unlike most volcanoes, hot spots are rarely found along the boundaries of the continental and oceanic plates that comprise the Earth’s crust; most hot spots lie deep in the interior of plates and are anchored deep in the layers of the Earth’s surface. Hot spots are also distinguished from other volcanoes by their lavas, which contain greater amounts of alkali metals than do those from volcanoes at plate margins. In some cases, plates moving past hot spots have left trails of extinct volcanoes in much the same way that wind passing over a chimney carries off puffs of smoke. It appears that the Hawaiian Islands were created in such a manner by a single source of lava, welling up from a hot spot, over which the Pacific Ocean plate passed on a course roughly from the east toward the northwest, carrying off a line of volcanoes of increasing age. Two other Pacific island chains—the Austral Ridge and the Tuamotu Ridge—parallel the configuration of the Hawaiian chain; they are also aligned from the east toward the northwest, with the most recent volcanic activity near their eastern terminuses. That the Pacific plate and the other plates are moving is now beyond dispute; the relative motion of the plates has been reconstructed in detail. However, the relative motion of the plates with respect to the Earth’s interior cannot be determined easily. Hot spots provide the measuring instruments for resolving the question of whether two continental plates are moving in opposite directions or whether one is stationary and the other is drifting away from it. The most compelling evidence that a continental plate is stationary is that, at some hot spots, lavas of several ages are superposed instead of being spread out in chronological sequence. Of course, reconstruction of plate motion from the tracks of hot-spot volcanoes assumes that hot spots are immobile, or nearly so. Several studies support such an assumption, including one that has shown that prominent hot spots throughout the world seem not to have moved during the past ten million years. Beyond acting as frames of reference, hot spots apparently influence the geophysical processes that propel the plates across the globe. When a continental plate comes to rest over a hot spot, material welling up from deeper layers forms a broad dome that, as it grows, develops deep fissures. In some instances, the continental plate may rupture entirely along some of the fissures so that the hot spot initiates the formation of a new ocean. Thus, just as earlier theories have explained the mobility of the continental plates, so hot-spot activity may suggest a theory to explain their mutability. 20. The primary purpose of the passage is to (A) describe the way in which hot spots influence the extinction of volcanoes (B) describe and explain the formation of the oceans and continents (C) explain how to estimate the age of lava flows from extinct volcanoes (D) describe hot spots and explain how they appear to influence and record the motion of plates (E) describe the formation and orientation of island chains in the Pacific Ocean 21. According to the passage, hot spots differ from most volcanoes in that hot spots (A) can only be found near islands (B) are active whereas all other volcanoes are extinct (C) are situated closer to the earth’s surface (D) can be found along the edges of the plates (E) have greater amounts of alkali metals in their lavas 22. It can be inferred from the passage that evidence for the apparent course of the Pacific plate has been provided by the (A) contours of the continents (B) dimensions of ocean hot spots (C) concurrent movement of two hot spots (D) pattern of fissures in the ocean floor (E) configurations of several mid-ocean island chains 23. It can be inferred from the passage that the spreading out of lavas of different ages at hot spots indicates that a (A) hot spot is active (B) continental plate has moved (C) continental rupture is imminent (D) hot spot had been moving very rapidly (E) volcano contains large concentrations of alkali metals 24. The passage suggests which of the following about the Hawaiian Islands, the Austral Ridge, and the Tuamotu Ridge? (A) The three chains of islands are moving eastward. (B) All the islands in the three chains have stopped moving. (C) The three island chains are a result of the same plate movement. (D) The Hawaiian Islands are receding from the other two island chains at a relatively rapid rate. (E) The Austral Ridge and the Tuamotu Ridge chains have moved closer together whereas the Hawaiian Islands have remained stationary. 25. Which of the following, if true, would best support the author’s statement that hot-spot activity may explain the mutability of continental plates? (A) Hot spots move more rapidly than the continental and oceanic plates. (B) Hot spots are reliable indicators of the age of continental plates. (C) Hot spots are regions of volcanic activity found only in the interiors of the continental plates. (D) The alignment of hot spots in the Pacific Ocean parallels the alignment of Pacific Ocean islands. (E) The coastlines of Africa and South America suggest that they may once have constituted a single continent that ruptured along a line of hot spots. 26. The author’s argument that hot spots can be used to reconstruct the movement of continental plates is weakened by the fact that (A) hot spots are never found at the boundaries of plates (B) only extinct volcanoes remain after a plate moves over a hot spot (C) lava flow patterns for all hot spots have not been shown to be the same (D) the immobility or near immobility of hot spots has not been conclusively proven (E) the changing configurations of islands make pinpointing the locations of hot spots difficult 27. The author’s style can best be described as (A) dramatic (B) archaic (C) esoteric (D) objective (E) humanistic SECTION B Although scientists observe that an organism’s behavior falls into rhythmic patterns, they disagree about how these patterns are affected when the organism is transported to a new environment. One experimenter, Brown, brought oysters from Connecticut waters to Illinois waters. She noted that the oysters initially opened their shells widest when it was high tide in Connecticut, but that after fourteen days their rhythms had adapted to the tide schedule in Illinois. Although she could not posit an unequivocal causal relationship between behavior and environmental change, Brown concluded that a change in tide schedule is one of several possible exogenous influences (those outside the organism) on the oysters’ rhythms. Another experimenter, Hamner, however, discovered that hamsters from California maintain their original rhythms even at the South Pole. He concluded that endogenous influences (those inside the organism) seem to affect an organism’s rhythmic behavior. 17. All of the following could be considered examples of exogenous influences on an organism EXCEPT the influence of the (A) level of a hormone on a field mouse’s readiness for mating (B) temperature of a region on a bear’s hibernation (C) salt level of a river on a fish’s migration (D) humidity of an area on a cat’s shedding of its fur (E) proximity of an owl on a lizard’s searching for food 18. Which of the following statements best describes the conclusion drawn by Brown (lines 14-17) (A) A change in tide schedule is the primary influence on an oyster’s rhythms. (B) A change in tide schedule may be an important exogenous influence on an oyster’s rhythms. (C) Exogenous influences, such as a change in tide schedule, seldom affect an oyster’s rhythms. (D) Endogenous influences have no effect on an oyster’s rhythms. (E) Endogenous influences are the only influences on an oyster’s rhythms. |
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