Solar energy is available in ____3____ forms. Buildings can be heated and cooled by direct use of solar radiation, crops and trees, which are the most efficient converters of sunlight into energy, can be grown for their energy potential, wastes can be burned as ____4____, sunlight can be converted into DC electricity, electric power can be____5____from the sun-warmed surface waters of the ocean, and lastly, solar radiation can be converted into heat that will drive electric power generators. Serious problems still remain as to ____6____and storage of solar energy.
Geothermal energy is the energy contained within the earth. Heat is abundantly available deep in the earths core and is constantly being produced. However, this heat is usually located at too deep a level for ____7____exploitation. In short, very little is known on the use of geothermal energy, and it has____8____been exploited.
Nuclear energy is produced in nuclear power plants. At these plants atoms of uranium are split, thus ____9____masses of energy. Another source of energy under development is the nuclear fusion of certain atoms of hydrogen. This could eventually ____10____natural gas as a source of energy.
A. rarely B. transformation C. fuel D. replace
E. led F. alternative G. commercial H. briefly
I. derived J. various K. relieving L. releasing
M. transportation N. financial O. described
I. E 2. F 3. J 4. C 5. I 6. M 7. G 8. A 9. L 10. D
雅思口语考试具体流程介绍
雅思口语:美剧口语小词系列(2)
雅思口语素材:好句推荐-谎言与真理
雅思口语高分范文:feel time slow
雅思口语天天练:“羡慕嫉妒恨”的表达
雅思口语素材:名人名言-梭罗
雅思口语经典话题10个
雅思口语常用短句表达25个
雅思口语:美剧口语小词系列(13)
雅思口语话题模板:person and place
雅思口语天天练:not give a rat's ass
雅思口语:美剧口语小词系列(12)
雅思口语:美剧口语小词系列(5)
雅思口语高分范文:英语学习经历
10套表达情绪的雅思口语高分句型
雅思口语:美剧口语小词系列(8)
吴彦祖示范雅思口语满分范文:impressive place
雅思口语高分范文:present
雅思口语:美剧口语小词系列(10)
雅思口语天天练:好句推荐
雅思口语天天练:和老外吵架必备口语
雅思口语:美剧口语小词系列(14)
辩证思维解决雅思口语的3C逻辑
吴彦祖示范雅思口语满分范文:job/major
雅思口语:美剧口语小词系列(4)
雅思口语高分秘诀:画面感
雅思口语高分范文:place
雅思口语高分范文:building
雅思口语话题常用短句20句
雅思口语:美剧口语小词系列(3)
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