测一测你的托福阅读速度够快吗

　　托福阅读速度是大家在备考中不得不练习的部分。下面新东方在线托福网也为大家整理了一些内容，辅助大家更好地来提高阅读速度。下面就进来测试一下，看你的速度够快吗。

　　1

　　Later Heyerdahl suggested that the Pacific was peopled by three migrations: by Native Americans from the Pacific Northwest of North America drifting to Hawaii, by Peruvians drifting to Easter Island, and by Melanesians. In 1969 he crossed the Atlantic in an Egyptian-style reed boat to prove Egyptian influences in the Americas. Contrary to these theorists, the overwhelming evidence of physical anthropology, linguistics, and archaeology shows that the Pacific islanders came from Southeast Asia and were skilled enough as navigators to sail against the prevailing winds and currents.

　　The word “overwhelming” in the passage is closest in meaning to

　　A. powerful

　　B. favorable

　　C. current

　　D. reasonable

　　2

　　Dissatisfaction with conventional explanations for dinosaur extinctions led to a surprising observation that, in turn, has suggested a new hypothesis. Many plants and animals disappear abruptly from the fossil record as one moves from layers of rock documenting the end of the Cretaceous up into rocks representing the beginning of the Cenozoic (the era after the Mesozoic).Between the last layer of Cretaceous rock and the first layer of Cenozoic rock, there is often a thin layer of clay. Scientists felt that they could get an idea of how long the extinctions took by determining how long it took to deposit this one centimeter of clay and they thought they could determine the time it took to deposit the clay by determining the amount of the element iridium (Ir) it contained.

　　【句子简化】

　　A. The fossil record suggests that there was an abrupt extinction of many plants and animals at the end of the Mesozoic era.

　　B. Few fossils of the Mesozoic era have survived in the rocks that mark the end of the Cretaceous.

　　C. Fossils from the Cretaceous period of the Mesozoic up to the beginning of the Cenozoic era have been removed from the layers of rock that surrounded them.

　　D. Plants and animals from the Mesozoic era were unable to survive in the Cenozoic era.

　　3

　　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.

　　In fact, damage to the environment by humans is often much more severe than damage by natural events and processes.

　　4

　　Most savannas probably experience mild fires frequently and major burns every two years or so. Many savanna and dry-forest plant species are called pyrophytes, meaning they are adapted in various ways to withstand occasional burning. Frequent fire is a factor to which rain forest species seem unable to adapt, although ancient charcoal remains from Amazon forest soils dating prior to the arrival of humans suggest that moist forests also occasionally burn. Experiments suggest that if fire did not occur in savannas in the Americas, species composition would change significantly. When burning occurs, it prevents competition among plant species from progressing to the point where some species exclude others, reducing the overall diversity of the ecosystem. But in experimental areas protected from fire, a few perennial grass species eventually come to dominate, outcompeting all others. Evidence from other studies suggests that exclusion of fire results in markedly decreased plant-species richness, often with an increase in tree density. There is generally little doubt that fire is a significant factor in maintaining savanna, certainly in most regions.

　　Paragraph 5 supports which of the following statements regarding the importance of fires in maintaining savannas?

　　A. Fires prevent the growth of pyrophytes.

　　B. Fires eliminate some species and thus reduce the overall diversity of the ecosystem.

　　C. Fires that occur once every two years are unlikely to help maintain savannas.

　　D. Fires prevent some species from eliminating other species with which they compete.

　　5

　　Another type of fossilization, known as carbonization, occurs when soft tissues are preserved as thin films of carbon. Leaves and tissue of soft-bodied organisms such as jellyfish or worms may accumulate, become buried and compressed, and lose their volatile constituents. The carbon often remains behind as a blackened silhouette.

　　Paragraph 5 suggests which of the following about the carbonization process?

　　A. It is completed soon after an organism dies.

　　B. It does not occur in hard-shell organisms.

　　C. It sometimes allows soft-tissued organisms to be preserved with all their parts.

　　D. It is a more precise process of preservation than is replacement.

　　答案

　　A A B D B

　　测试结果

　　6分钟及以上：速度略慢，继续努力

　　5-6分钟：比较稳健，还需精进!

　　4-5分钟： 不错不错，高分指日可待!

　　3-4分钟 (or even less)：大佬好!

　　以上就是为大家整理的“测一测你的托福阅读速度够快吗”，更多精彩内容请关注新东方在线托福频道!