托福TPO3阅读真题原文及答案翻译Part3
托福TPO作为托福的模考工具，它的题目对于我们备考托福很有参考价值，为了帮助大家备考，下面我给大家整理了托福TPO3阅读真题原文Part3，望喜欢！ 托福TPO3阅读真题原文Part3 The Long-Term Stability of Ecosystems Plant communities assemble themselves flexibly, and their particular structure depends on the specific history of the area. Ecologists use the term "succession" to refer to the changes that happen in plant communities and ecosystems over time. The first community in a succession is called a pioneer community, while the long-lived community at the end of succession is called a climax community. Pioneer and successional plant communities are said to change over periods from 1 to 500 years. These changes-in plant numbers and the mix of species-are cumulative. Climax communities themselves change but over periods of time greater than about 500 years. An ecologist who studies a pond today may well find it relatively unchanged in a year's time. Individual fish may be replaced, but the number of fish will tend to be the same from one year to the next. We can say that the properties of an ecosystem are more stable than the individual organisms that compose the ecosystem. At one time, ecologists believed that species diversity made ecosystems stable. They believed that the greater the diversity the more stable the ecosystem. Support for this idea came from the observation that long-lasting climax communities usually have more complex food webs and more species diversity than pioneer communities. Ecologists concluded that the apparent stability of climax ecosystems depended on their complexity. To take an extreme example, farmlands dominated by a single crop are so unstable that one year of bad weather or the invasion of a single pest can destroy the entire crop. In contrast, a complex climax community, such as a temperate forest, will tolerate considerable damage from weather to pests. The question of ecosystem stability is complicated, however. The first problem is that ecologists do not all agree what "stability" means. Stability can be defined as simply lack of change. In that case, the climax community would be considered the most stable, since, by definition, it changes the least over time. Alternatively, stability can be defined as the speed with which an ecosystem returns to a particular form following a major disturbance, such as a fire. This kind of stability is also called resilience. In that case, climax communities would be the most fragile and the least stable, since they can require hundreds of years to return to the climax state. Even the kind of stability defined as simple lack of change is not always associated with maximum diversity. At least in temperate zones, maximum diversity is often found in mid-successional stages, not in the climax community. Once a redwood forest matures, for example, the kinds of species and the number of individuals growing on the forest floor are reduced. In general, diversity, by itself, does not ensure stability. Mathematical models of ecosystems likewise suggest that diversity does not guarantee ecosystem stability-just the opposite, in fact. A more complicated system is, in general, more likely than a simple system to break down. A fifteen-speed racing bicycle is more likely to break down than a child's tricycle. Ecologists are especially interested to know what factors contribute to the resilience of communities because climax communities all over the world are being severely damaged or destroyed by human activities. The destruction caused by the volcanic explosion of Mount St. Helens, in the northwestern United States, for example, pales in comparison to the destruction caused by humans. We need to know what aspects of a community are most important to the community's resistance to destruction, as well as its recovery. Many ecologists now think that the relative long-term stability of climax communities comes not from diversity but from the "patchiness" of the environment, an environment that varies from place to place supports more kinds of organisms than an environment that is uniform. A local population that goes extinct is quickly replaced by immigrants from an adjacent community. Even if the new population is of a different species, it can approximately fill the niche vacated by the extinct population and keep the food web intact. Paragraph 1: Plant communities assemble themselves flexibly, and their particular structure depends on the specific history of the area. Ecologists use the term "succession" to refer to the changes that happen in plant communities and ecosystems over time. The first community in a succession is called a pioneer community, while the long-lived community at the end of succession is called a climax community. Pioneer and successional plant communities are said to change over periods from 1 to 500 years. These changes-in plant numbers and the mix of species-are cumulative. Climax communities themselves change but over periods of time greater than about 500 years. 托福TPO3阅读真题题目Part3 1. The word "particular" in the passage is closest in meaning to ○natural ○final ○specific ○complex 2. According to paragraph 1, which of the following is NOT true of climax communities? ○They occur at the end of a succession. ○They last longer than any other type of community. ○The numbers of plants in them and the mix of species do not change. ○They remain stable for at least 500 years at a time. Paragraph 2: An ecologist who studies a pond today may well find it relatively unchanged in a year's time. Individual fish may be replaced, but the number of fish will tend to be the same from one year to the next. We can say that the properties of an ecosystem are more stable than the individual organisms that compose the ecosystem. 3. According to paragraph 2, which of the following principles of ecosystems can be learned by studying a pond? ○Ecosystem properties change more slowly than individuals in the system. ○The stability of an ecosystem tends to change as individuals are replaced. ○Individual organisms are stable from one year to the next. ○A change in the members of an organism does not affect an ecosystem's properties. Paragraph 3: At one time, ecologists believed that species diversity made ecosystems stable. They believed that the greater the diversity the more stable the ecosystem. Support for this idea came from the observation that long-lasting climax communities usually have more complex food webs and more species diversity than pioneer communities. Ecologists concluded that the apparent stability of climax ecosystems depended on their complexity. To take an extreme example, farmlands dominated by a single crop are so unstable that one year of bad weather or the invasion of a single pest can destroy the entire crop. In contrast, a complex climax community, such as a temperate forest, will tolerate considerable damage from weather to pests. 4. According to paragraph 3, ecologists once believed that which of the following illustrated the most stable ecosystems? ○Pioneer communities ○Climax communities ○Single-crop farmlands ○Successional plant communities Paragraph 4: The question of ecosystem stability is complicated, however. The first problem is that ecologists do not all agree what "stability" means. Stability can be defined as simply lack of change. In that case, the climax community would be considered the most stable, since, by definition, it changes the least over time. Alternatively, stability can be defined as the speed with which an ecosystem returns to a particular form following a major disturbance, such as a fire. This kind of stability is also called resilience. In that case, climax communities would be the most fragile and the least stable, since they can require hundreds of years to return to the climax state. 5. According to paragraph 4, why is the question of ecosystem stability complicated? ○The reasons for ecosystem change are not always clear. ○Ecologists often confuse the word "stability" with the word "resilience." ○The exact meaning of the word "stability" is debated by ecologists. ○There are many different answers to ecological questions. 6. According to paragraph 4, which of the following is true of climax communities?○They are more resilient than pioneer communities. ○They can be considered both the most and the least stable communities. ○They are stable because they recover quickly after major disturbances. ○They are the most resilient communities because they change the least over time. Paragraph 5: Even the kind of stability defined as simple lack of change is not always associated with maximum diversity. At least in temperate zones, maximum diversity is often found in mid-successional stages, not in the climax community. Once a redwood forest matures, for example, the kinds of species and the number of individuals growing on the forest floor are reduced. In general, diversity, by itself, does not ensure stability. Mathematical models of ecosystems likewise suggest that diversity does not guarantee ecosystem stability-just the opposite, in fact. A more complicated system is, in general, more likely than a simple system to break down. A fifteen-speed racing bicycle is more likely to break down than a child's tricycle. 7. Which of the following can be inferred from paragraph 5 about redwood forests? ○They become less stable as they mature. ○They support many species when they reach climax. ○They are found in temperate zones. ○They have reduced diversity during mid-successional stages. 8. The word "guarantee" in the passage is closest in meaning to ○increase ○ensure ○favor ○complicate 9. In paragraph 5, why does the author provide the information that "A fifteen-speed racing bicycle is more likely to break down than a child's tricycle"? ○To illustrate a general principle about the stability of systems by using an everyday example ○To demonstrate that an understanding of stability in ecosystems can be applied to help understand stability in other situations ○To make a comparison that supports the claim that, in general, stability increases with diversity ○To provide an example that contradicts mathematical models of ecosystems Paragraph 6: Ecologists are especially interested to know what factors contribute to the resilience of communities because climax communities all over the world are being severely damaged or destroyed by human activities. The destruction caused by the volcanic explosion of Mount St. Helens, in the northwestern United States, for example, pales in comparison to the destruction caused by humans. We need to know what aspects of a community are most important to the community's resistance to destruction, as well as its recovery. 10. The word "pales" in the passage is closest in meaning to ○increases proportionally ○differs ○loses significance ○is common Paragraph 7: Many ecologists now think that the relative long-term stability of climax communities comes not from diversity but from the "patchiness" of the environment, an environment that varies from place to place supports more kinds of organisms than an environment that is uniform. A local population that goes extinct is quickly replaced by immigrants from an adjacentcommunity. Even if the new population is of a different species, it can approximately fill the niche vacated by the extinct population and keep the food web intact. 11.Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incurred choices change the meaning in important ways or leave out essential information. ○Ecologists now think that the stability of an environment is a result of diversity rather than patchiness. ○Patchy environments that vary from place to place do not often have high species diversity. ○Uniform environments cannot be climax communities because they do not support as many types of organisms as patchy environments. ○A patchy environment is thought to increase stability because it is able to support a wide variety of organisms. 12.The word "adjacent" in the passage is closest in meaning to ○foreign ○stable ○fluid ○neighboring Paragraph 6: █Ecologists are especially interested to know what factors contribute to the resilience of communities because climax communities all over the world are being severely damaged or destroyed by human activities. █The destruction caused by the volcanic explosion of Mount St. Helens, in the northwestern United States, for example, pales in comparison to the destruction caused by humans. █We need to know what aspects of a community are most important to the community's resistance to destruction, as well as its recovery. █ 13.Look at the four squares [█] that indicate where the following sentence could be added to the passage. In fact, damage to the environment by humans is often much more severe than damage by natural events and processes. Where would the sentence best fit? Click on a square to add the sentence to the passage. 14.Directions: An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answer choices that express the most important ideas in the passage. Some sentences do not belong in the summary because they express ideas that are not presented in the passage or are minor ideas in the passage. This question is worth 2 points. The process of succession and the stability of a climax community can change over time. ● ● ● Answer choices ○The changes that occur in an ecosystem from the pioneer to the climax community can be seen in one human generation. ○A high degree of species diversity does not always result in a stable ecosystem. ○The level of resilience in a plant community contributes to its long-term stability. ○Ecologists agree that climax communities are the most stable types of ecosystems. ○Disagreements over the meaning of the term "stability" make it difficult to identify the most stable ecosystems. ○The resilience of climax communities makes them resistant to destruction caused by humans 托福TPO3阅读真题答案Part3 参考答案： 1. ○3 2. ○3 3. ○1 4. ○2 5. ○3 6. ○2 7. ○3 8. ○2 9. ○1 10. ○3 11. ○4 12. ○4 13. ○2 14. A high degree of species diversity The level of resilience in Disagreements over the 托福TPO3阅读翻译Part3 参考翻译：生态系统的长期稳定 植物群体可以自由地聚集，它们特殊的结构取决于聚集区域的具体历史。生态学家使用"演替"来诠释植物群落和生态系统随着时间推移所发生的变化。演替中的第一个群落被称作先锋群落，而处于演替最后那个长期生存的群落被称为顶极群落。先锋群落和紧接着的植物群落的变化周期是从1到500年不等，植物数量和混合种类数量的变化是慢慢积累的。顶极群落本身也改变，但其变化周期超过500年。 现代一个研究池塘的生态学会发现池塘在一年当中相对而言是不变的。个别鱼类可能被替换，但年复一年鱼的总数都趋于一致。也就是说，一个生态系统自身的属性要比由单一生物体组成的生态系统更稳定。 生态学家们一度认为物种的多样性使生态系统稳定，生态系统物种越多样则生态系统越稳定。通过观察得出的结论支持了这个观点，长期持久的顶极群落通常要比先锋群落具备更为复杂的食物网和更多的物种。生态学家家们得出的结论是：顶点生态系统的稳定性明显取决于他们的复杂化程度。举个极端的例子，在单一作物的农田中，一年的恶劣天气或单一害虫的入侵就可以摧毁所有作物。与此相反，在一个复杂的顶极群落里，如温带森林，他们便可以抵御来自气候和害虫的干扰和入侵。 不管怎样，生态系统稳定性的问题非常复杂。首先，不是所有的生态学家都赞同"稳定"的含义。稳定性可以简单地定义为缺乏变化。如果是这样的话，顶极群落将被视为最稳定的，因为根据定义，他们随着时间推移而变化得最少。另外，稳定性也可以界定为生态系统在经历了严重破坏之后回复原貌的速度，比如火灾。这种稳定性也被称作弹性。在这种情况下，顶极群落将是最脆弱和最不稳定的，因为他们可能需要数百年时间才能恢复到顶点状态。 即使是这种被定义为简单地缺乏变化的稳定性并非总是与最多样的物种联系起来。至少在温带地区，会经常在演替过程中发现最多物种，而不是在顶极群落中。例如，红杉树林一旦成熟，其中的物种数量以及单个物种的数量都会减少。一般来说，多样性本身并不能保证稳定性(事实上正相反)，生态系统的数学模型也可以得出同样的结论。一个更复杂的系统可能比一个简单的系统更容易被破坏(一个十五速的 赛车 比一个孩子的三轮车更容易损坏)。 生态学家们更想弄清楚到底哪些因素有助于促成群落的恢复，因为世界各地的顶极群落都因为人类活动而遭受到严重的损坏或毁坏。就像美国西北部圣海伦火山的猛烈喷发所造成的破坏，在人类活动对环境造成的破坏面前也相形见绌。我们必须了解对群落抵抗、破坏和恢复来说哪些是最重要的。 现在的很多生态学家们认为，顶极群落相对长期的稳定性并非来自于多样性，而是来自环境的"补缀"，随处变化的环境比始终如一的环境更有利于多种有机体的生存。当地物种灭亡后，马上就会被相邻群落的移民取代。即便是另一种不同的物种，他们也可以填补那些已灭绝生物的空缺，并保持食物网的完整。 托福TPO3阅读真题原文及答案翻译Part3相关 文章 ： 1. 新托福阅读考试需要多长时间
托福阅读真题:TPO11原文及答案
TPO模考工具是我没复习托福非常好的帮手，属于我们一定要好好利用，下面我给大家带来托福阅读真题:TPO11原文及答案，欢迎阅读参考！ 托福阅读真题:TPO11原文 Ancient Egyptian Sculpture In order to understand ancient Egyptian art, it is vital to know as much as possible of the elite Egyptians' view of the world and the functions and contexts of the art produced for them. Without this knowledge we can appreciate only the formal content of Egyptian art, and we will fail to understand why it was produced or the concepts that shaped it and caused it to adopt its distinctive forms. In fact, a lack of understanding concerning the purposes of Egyptian art has often led it to be compared unfavorably with the art of other cultures: Why did the Egyptians not develop sculpture in which the body turned and twisted through space like classical Greek statuary? Why do the artists seem to get left and right confused? And why did they not discover the geometric perspective as European artists did in the Renaissance? The answer to such questions has nothing to do with a lack of skill or imagination on the part of Egyptian artists and everything to do with the purposes for which they were producing their art. The majority of three-dimensional representations, whether standing, seated, or kneeling, exhibit what is called frontality: they face straight ahead, neither twisting nor turning. When such statues are viewed in isolation, out of their original context and without knowledge of their function, it is easy to criticize them for their rigid attitudes that remained unchanged for three thousand years. Frontality is, however, directly related to the functions of Egyptian statuary and the contexts in which the statues were set up. Statues were created not for their decorative effect but to play a primary role in the cults of the gods, the king, and the dead. They were designed to be put in places where these beings could manifest themselves in order to be the recipients of ritual actions. Thus it made sense to show the statue looking ahead at what was happening in front of it, so that the living performer of the ritual could interact with the divine or deceased recipient. Very often such statues were enclosed in rectangular shrines or wall niches whose only opening was at the front, making it natural for the statue to display frontality. Other statues were designed to be placed within an architectural setting, for instance, in front of the monumental entrance gateways to temples known as pylons, or in pillared courts, where they would be placed against or between pillars: their frontality worked perfectly within the architectural context. Statues were normally made of stone, wood, or metal. Stone statues were worked from single rectangular blocks of material and retained the compactness of the original shape. The stone between the arms and the body and between the legs in standing figures or the legs and the seat in seated ones was not normally cut away. From a practical aspect this protected the figures against breakage and psychologically gives the images a sense of strength and power, usually enhanced by a supporting back pillar. By contrast, wooden statues were carved from several pieces of wood that were pegged together to form the finished work, and metal statues were either made by wrapping sheet metal around a wooden core or cast by the lost wax process. The arms could be held away from the body and carry separate items in their hands; there is no back pillar. The effect is altogether lighter and freer than that achieved in stone, but because both perform the same function, formal wooden and metal statues still display frontality. Apart from statues representing deities, kings, and named members of the elite that can be called formal, there is another group of three-dimensional representations that depicts generic figures, frequently servants, from the nonelite population. The function of these is quite different. Many are made to be put in the tombs of the elite in order to serve the tomb owners in the afterlife. Unlike formal statues that are limited to static poses of standing, sitting, and kneeling, these figures depict a wide range of actions, such as grinding grain, baking bread, producing pots, and making music, and they are shown in appropriate poses, bending and squatting as they carry out their tasks. Paragraph 1: In order to understand ancient Egyptian art, it is vital to know as much as possible of the elite Egyptians' view of the world and the functions and contexts of the art produced for them. Without this knowledge we can appreciate only the formal content of Egyptian art, and we will fail to understand why it was produced or the concepts that shaped it and caused it to adopt its distinctive forms. In fact, a lack of understanding concerning the purposes of Egyptian art has often led it to be compared unfavorably with the art of other cultures: Why did the Egyptians not develop sculpture in which the body turned and twisted through space like classical Greek statuary? Why do the artists seem to get left and right confused? And why did they not discover the geometric perspective as European artists did in the Renaissance? The answer to such questions has nothing to do with a lack of skill or imagination on the part of Egyptian artists and everything to do with the purposes for which they were producing their art. 托福阅读真题:TPO11题目 1. The word “vital” in the passage is closest in meaning to attractive essential usual practical 2. Paragraph 1 suggests that one reason Egyptian art is viewed less favorably than other art is that Egyptian art lacks a realistic sense of human body proportion a focus on distinctive forms of varying sizes the originality of European art the capacity to show the human body in motion 3. In paragraph 1, the author mentions all of the following as necessary in appreciating Egyptian art EXCEPT an understanding of the reasons why the art was made the nature of aristocratic Egyptian beliefs the influences of Egyptian art on later art such as classical Greek art how the art was used Paragraph 2: The majority of three-dimensional representations, whether standing, seated, or kneeling, exhibit what is called frontality: they face straight ahead, neither twisting nor turning. When such statues are viewed in isolation, out of their original context and without knowledge of their function, it is easy to criticize them for their rigid attitudes that remained unchanged for three thousand years. Frontality is, however, directly related to the functions of Egyptian statuary and the contexts in which the statues were set up. Statues were created not for their decorative effect but to play a primary role in the cults of the gods, the king, and the dead. They were designed to be put in places where these beings could manifest themselves in order to be the recipients of ritual actions. Thus it made sense to show the statue looking ahead at what was happening in front of it, so that the living performer of the ritual could interact with the divine or deceased recipient. Very often such statues were enclosed in rectangular shrines or wall niches whose only opening was at the front, making it natural for the statue to display frontality. Other statues were designed to be placed within an architectural setting, for instance, in front of the monumental entrance gateways to temples known as pylons, or in pillared courts, where they would be placed against or between pillars: their frontality worked perfectly within the architectural context. 4. According to paragraph 2, why are Egyptian statues portrayed frontality? To create a psychological effect of distance and isolation To allow them to fulfill their important role in ceremonies of Egyptian life To provide a contrast to statues with a decorative function To suggest the rigid, unchanging Egyptian philosophical attitudes 5. The word “context” in the passage is closest in meaning to connection influence environment requirement 6. The author mentions “an architectural setting” in the passage in order to suggest that architecture was as important as sculpture to Egyptian artists offer a further explanation for the frontal pose of Egyptian statues explain how the display of statues replaced other forms of architectural decoration illustrate the religious function of Egyptian statues 7. The word “they” in the passage refers to statues gateways temples pillared courts Paragraph 3: Statues were normally made of stone, wood, or metal. Stone statues were worked from single rectangular blocks of material and retained the compactness of the original shape. The stone between the arms and the body and between the legs in standing figures or the legs and the seat in seated ones was not normally cut away. From a practical aspect this protected the figures against breakage and psychologically gives the images a sense of strength and power, usually enhanced by a supporting back pillar. By contrast, wooden statues were carved from several pieces of wood that were pegged together to form the finished work, and metal statues were either made by wrapping sheet metal around a wooden core or cast by the lost wax process. The arms could be held away from the body and carry separate items in their hands; there is no back pillar. The effect is altogether lighter and freer than that achieved in stone, but because both perform the same function, formal wooden and metal statues still display frontality. 8. According to paragraph 3, why were certain areas of a stone statue left uncarved? To prevent damage by providing physical stability To emphasize that the material was as important as the figure itself To emphasize that the figure was not meant to be a real human being To provide another artist with the chance to finish the carving 9. The word “core” in the passage is closest in meaning to material layer center frame 10. According to paragraph 3, which of the following statements about wooden statues is true? Wooden statues were usually larger than stone statues. Wooden statues were made from a single piece of wood. Wooden statues contained pieces of metal or stone attached to the front. Wooden statues had a different effect on the viewer than stone statues. Paragraph 4: Apart from statues representing deities, kings, and named members of the elite that can be called formal, there is another group of three-dimensional representations that depicts generic figures, frequently servants, from the nonelite population. The function of these is quite different. Many are made to be put in the tombs of the elite in order to serve the tomb owners in the afterlife. Unlike formal statues that are limited to static poses of standing, sitting, and kneeling, these figures depict a wide range of actions, such as grinding grain, baking bread, producing pots, and making music, and they are shown in appropriate poses, bending and squatting as they carry out their tasks. 11. The word depicts in the passage is closest in meaning to imagines classifies elevates portrays 12. According to paragraph 4, what is the difference between statues that represent the Egyptian elite and statues that represent the nonelite classes? Statues of the elite are included in tombs, but statues of the nonelite are not. Statues of the elite are in motionless poses, while statues of the nonelite are in active poses. Statues of the elite are shown standing, while statues of the nonelite are shown sitting or kneeling. Statues of the elite serve an important function, while statues of the nonelite are decorative. Paragraph 4: Apart from statues representing deities, kings, and named members of the elite that can be called formal, there is another group of three-dimensional representations that depicts generic figures, frequently servants, from the nonelite population. The function of these is quite different. Many are made to be put in the tombs of the elite in order to serve the tomb owners in the afterlife. Unlike formal statues that are limited to static poses of standing, sitting, and kneeling, these figures depict a wide range of actions, such as grinding grain, baking bread, producing pots, and making music, and they are shown in appropriate poses, bending and squatting as they carry out their tasks. 13. Look at the four squares [] that indicate where the following sentence could be added to the passage. In fact, it is the action and not the figure itself that is important. Where would the sentence best fit? 14.Directions: An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answer that express the most important ideas in the passage. Some sentences do not belong in the summary because they express ideas that not presented in the passage or are minor ideas in the passage. This question is worth 2 points. The distinctive look of ancient Egyptian sculpture was determined largely by its function. Answer Choices The twisted forms of Egyptian statues indicate their importance in ritual actions. The reason Egyptian statues are motionless is linked to their central role in cultural rituals. Stone, wood, and metal statues all display the feature of frontality. Statues were more often designed to be viewed in isolation rather than placed within buildings. The contrasting poses used in statues of elite and nonelite Egyptians reveal their difference in social status. Although the appearances of formal and generic statues differ, they share the same function. 托福阅读真题:TPO11答案 1. 2 2. 4 3. 3 4. 2 5. 3 6. 2 7. 1 8.1 9. 3 10. 4 11. 4 12. 2 13. 4 14. The reason Egyptian Stone, wood, and The contrasting poses 托福阅读真题:TPO11原文及答案相关 文章 ： ★ 11.26托福考试解析之一:独立口语和写作
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