如何提高新GRE阅读水平呢？习题练习肯定是少不了的，为了帮助大家更好的备考新GRE考试阅读理解，下面澳际
留学小编给大家整理了新GRE阅读理解模拟练习题，希望考生能够更好的掌握解题思路。
新GRE阅读理解模拟练习题如下，同学们可以先进行练习，再对照答案，看看自己的阅读水平。
Many theories have been formulated to explain the role of grazers such as zooplankton in controlling the amount of planktonic algae (phytoplankton)in lakes. The first theories of such grazer control were merely based on observations of negative correlations between algal and zooplankton numbers. A low number of algal cells in the presence of a high number of grazers suggested, but did not prove, that the grazers had removed most of the algae. The converse observation, of the absence of grazers in areas of high phytoplankton concentration, led Hardy to propose his principle of animal exclusion, which hypothesized that phytoplankton produced a repellent that excluded grazers from regions of high phytoplankton concentration. This was the first suggestion of algal denses against grazing.
Perhaps the fact that many of these first studies considered only algae of a size that could be collected in a net (net phytoplankton), a practice that overlooked the smaller phytoplankton (nannoplankton)that we now know grazers are most likely to feed on, led to a de-emphasis of the role of grazers in subsequent research. Increasingly, as in the individual studies of Lund, Round, and Reynolds, researchers began to stress the importance of environmental factors such as temperature, light, and water movements in controlling algal numbers. These environmental factors were amenable to field monitoring and to simulation in the laboratory. Grazing was believed to have some fect on algal numbers, especially after phytoplankton growth rates declined at the end of bloom periods, but grazing was considered a minor component of models that predicted algal population dynamics.
The potential magnitude of grazing pressure on freshwater phytoplankton has only recently been determined empirically. Studies by Hargrave and Geen estimated natural community grazing rates by measuring feeding rates of individual zooplankton species in the laboratory and then computing community grazing rates for field conditions using the known population density of grazers. The high estimates of grazing pressure postulated by these researchers were not fully accepted, however, until the grazing rates of zooplankton were determined directly in the field, by means of new experimental techniques. Using a specially prepared feeding chamber, Haney was able to record zooplankton grazing rates in natural field conditions. In the periods of peak zooplankton abundance, that is, in the late spring and in the summer, Haney recorded maximum daily community grazing rates, for nutrient-poor lakes and bog lakes, respectively, of 6.6 percent and 114 percent of daily phytoplankton production. Cladocerans had higher grazing rates than copepods, usually accounting for 80 percent of the community grazing rate. These rates varied seasonally, reaching the lowest point in the winter and early spring. Haney’s thorough research provides convincing field evidence that grazers can exert significant pressure on phytoplankton population.
20. The author most likely mentions Hardy’s principle of animal exclusion in order to
(A)give an example of one theory about the interaction of grazers and phytoplankton
(B)dend the first theory of algal denses against grazing
(C)support the contention that phytoplankton numbers are controlled primarily by environmental factors
(D)demonstrate the superiority of laboratory studies of zooplankton feeding rates to other kinds of studies of such rates
(E)rute researchers who believed that low numbers of phytoplankton indicated the grazing fect of low numbers of zooplankton
21. It can be inferred from the passage that the “first theories” of grazer control mentioned in line 4 would have been more convincing if researchers had been able to
(A)observe high phytoplankton numbers under natural lake conditions
(B)discover negative correlations between algae and zooplankton numbers from their field research
(C)understand the central importance of environmental factors in controlling the growth rates of phytoplankton
(D)make verifiable correlations of cause and fect between zooplankton and phytoplankton numbers
(E)invent laboratory techniques that would have allowed them to bypass their field research concerning grazer control
22. Which of the following, if true, would call into question Hardy’s principle of animal exclusion?
(A)Zooplankton are not the only organisms that are affected by phytoplankton repellents.
(B)Zooplankton exclusion is unrelated to phytoplankton population density.
(C)Zooplankton population density is higher during some parts of the year than during others.
(D)Net phytoplankton are more likely to exclude zooplankton than are nannoplankton.
(E)Phytoplankton numbers can be strongly affected by environmental factors.
23. The author would be likely to aGREe with which of the following statements regarding the pressure of grazers on phytoplankton numbers?
I. Grazing pressure can vary according to the individual type of zooplankton.
II. Grazing pressure can be lower in nutrient-poor lakes than in bog lakes.
III. Grazing tends to exert about the same pressure as does temperature.
(A)I only
(B)III only
(C)I and II only
(D)II and III only
(E)I, II, and III
24. The passage supplies information to indicate that Hargrave and Geen’s conclusion regarding the grazing pressure exerted by zooplankton on phytoplankton numbers was most similar to the conclusion regarding grazing pressure reached by which of the following researchers?
(A)Hardy
(B)Lund
(C)Round
(D)Reynolds
(E)Haney
25. It can be inferred from the passage that one way in which many of the early researchers on grazer control could have improved their data would have been to
(A)emphasize the fects of temperature, rather than of light, on phytoplankton
(B)disregard nannoplankton in their analysis of phytoplankton numbers
(C)collect phytoplankton of all sizes bore analyzing the extent of phytoplankton concentration
(D)recognize that phytoplankton other than net phytoplankton could be collected in a net
(E)understand the crucial significance of net phytoplankton in the diet of zooplankton
26. According to the passage, Hargrave and Geen did which of the following in their experiments?
(A)They compared the grazing rates of individual zooplankton species in the laboratory with the natural grazing rates of these species.
(B)The hypothesized about the population density of grazers in natural habitats by using data concerning the population density of grazers in the laboratory.
(C)They estimated the community grazing rates of zooplankton in the laboratory by using data concerning the natural community grazing rates of zooplankton.
(D)They estimated the natural community grazing rates of zooplankton by using data concerning the known population density of phytoplankton.
(E)They estimated the natural community grazing rates of zooplankton by using laboratory data concerning the grazing rates of individual zooplankton species.
27. Which of the following is a true statement about the zooplankton numbers and zooplankton grazing rates observed in Haney’s experiments?
(A)While zooplankton numbers began to decline in August, zooplankton grazing rates began to increase.
(B)Although zooplankton numbers were high in May, grazing rates did not become high until January.
(C)Both zooplankton numbers and grazing rates were higher in December than in November.
(D)Both zooplankton numbers and grazing rates were lower in March than in June.
(E)Both zooplankton numbers and grazing rates were highest in February.
答案 A D B C E C E D
以上就是新GRE阅读理解模拟练习题，供考生备考的时候作为习题练习，考生可以在备考中多加练习，希望能够帮助考生总结出新的解题思路，澳际小编预祝考生能够在GRE考试中取得优异的成绩。
澳际培训在国内首家推出专职"学习规划师"和"留学规划师"制度，对学生全程规划、全程跟踪，全程反馈。我们汇聚了国内外顶级名师，平均教学经验在5年以上，并实行八对一尊享服务
--课程规划师，留学规划师，阅读教师，写作教师，听力教师，口语教师，语法教师，词汇教师等八位一体。完善的留学服务保证，整合了十年留学服务经验，让我们能将一流培训和申请服务全程有机结合。澳际50%学子都获得TOEFL 100和SAT 2000以上的分数。
澳际六步曲第二步考试指导具体服务项目如下：
1. 免费测评模考，分析申请人的问题，制作考试测评报告和备考指导
2. 结合申请人的申请目标和考试基础，制定考试整体规划及时间安排
3. 提供对申请人有帮助的考试经验和机经等
4. 根据需要提供免费口语模拟和指导服务
5. 免费修改作文4篇
6. 考前心理指导，调整考前心理状态
（注：口语模拟和作文修改服务提供时间为每年2月28日-8月1日）详细了解澳际教育考试服务www.aoji.cn
澳际学费在线支付平台
