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GRE阅读模拟在线练习附答案一百六十三

2018-11-21 16:44:00来源：网络

　　The primary purpose of the passage is to

　　A.warn of the dangers of continued burning of fossil fuels

　　B.discuss the significance of increasing the amount of carbon dioxide in the atmosphere

　　C.explain how a constant temperature is maintained on the Earth's surface

　　D.describe the ways in which various atmospheric and climatic conditions contribute to the Earth's weather

　　E.demonstrate the usefulness of mathematical models in predicting long-range climatic change

　　According to the passage, the greatest part of the solar energy that reaches the Earth is

　　A.concentrated in the infrared spectrum

　　B.concentrated at visible wavelengths

　　C.absorbed by carbon dioxide molecules

　　D.absorbed by atmospheric water vapor

　　E.reflected back to space by snow and ice

　　According to the passage, atmospheric carbon dioxide performs all of the following functions EXCEPT

　　A.absorbing radiation at visible wavelengths

　　B.absorbing infrared radiation

　　C.absorbing outgoing radiation from the Earth

　　D.helping to retain heat near the Earth's surface

　　E.helping to maintain a constant average temperature on the Earth's surface

　　Which of the following best describes the author's attitude toward the increasing amount of carbon dioxide in the atmosphere and its consequences?

　　A.Incredulous

　　B.Completely detached

　　C.Interested but skeptical

　　D.Angry yet resigned

　　E.Objective yet concerned

　　It can be concluded from information contained in the passage that the average temperature at an altitude of 1 kilometer above the Earth is about

　　A.15°C

　　B.9°C

　　C.2.5°C

　　D.-12°C

　　E.-18°C

　　It can be inferred from the passage that the construction of the mathematical model mentioned in the passage involved the formulation of which of the following?

　　A.An assumption that the amount of carbon dioxide added to the atmosphere would in reality steadily increase

　　B.An assumption that human activities are the only agencies by which carbon dioxide is added to the atmosphere

　　C.Assumptions about the social and political consequences of any curtailment of the use of fossil fuels

　　D.Assumptions about the physical conditions that are likely to prevail during the period for which the model was made

　　E.Assumptions about the differential behavior of carbon dioxide molecules at the various levels of temperature calculated in the model

　　According to the passage, which of the following is true of the last hundred years?

　　A.Fossil fuels were burned for the first time.

　　B.Greater amounts of land were cleared than at any time before.

　　C.The average temperature at the Earth's surface has become 2°C cooler.

　　D.The amount of carbon dioxide in the atmosphere has increased measurably.

　　E.The amount of farmland worldwide has doubled.

　　正确答案:B B A E B D D

　　以上就是关于“GRE阅读模拟在线练习附答案一百六十三”的内容，更多精彩内容，请关注GRE频道!


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