全國英語等級考試PETS3真題練習

　　Part D

　　Directions:

　　Read the following text from which 10 words have been removed. Choose from the words A-O the most suitable one to fill each numbered gap in the text (46-55). There are FIVE extra words that you do not need to use. Mark your answers on your ANSWER SHEET 1.

　　With the world s population estimated to grow from six to nine billion by 2050, researchers,businesses and governments are already dealing with the impact, this increase will have on every-thing from food and water to infrastructure (基礎設施)and jobs. Underling all this 46 will be the demand for energy, which is expected to double over the next 40 years.

　　Finding the resources to meet this demand in a 47, sustainable way is the cornerstone (基石 ) of our nation s energy security, and will be one of the major 48 of the 21st century. Alternative forms of energy-bio-fuels, wind and solar, to name a few--are 49 being funded and developed, and will play a growing 50 in the world s energy supply. But experts say that even when 51 , alternative energy sources will likely meet only about 30% of the world s energy needs by 2049.

　　For example, even with 52 investments, such as the $ 93 million for wind energy development 53 in the American Recovery and Reinvestment Act, important alternative energy sources such as wind and bio fuels 54 only about 1% of the market today.

　　Energy and sustainability experts say the answer to our future energy needs will likely come from a lot of 55 --both traditional and alternative.

　　A. stable

　　B. solutions

　　C. significant

　　D. role

　　E. progress

　　F . marvelous

　　G . included

　　H.growth

　　I .exactly

　　J .consist

　　K. comprise

　　L . competitions

　　M. combined

　　N. challenges

　　o.certainly

　　Part D

　　參考譯文

　　據估計，到2050年，世界人口將從60億增長至90億，研究人員、企業和各國政府已經開始著手應對人口增長會對從食物、水資源到基礎設施及就業等各方面帶來的影響。在這一增長的背后將是對能源的需求，這種需求預計在未來的40年內將翻一番。

　　找到能夠穩定而持續地滿足這種需求的資源是我們國家能源安全的基石，也將是21世紀的主要挑戰之一。這些可替代能源，如生物燃料、風能和太陽能，必定將會得到投資和發展，并且將在世界能源供應中扮演著越來越重要的角色。但是專家指出，即使將所有可替代能源都結合起來，到2050年，或許只能滿足世界能源需求的30%左右。

　　例如，即使有了大額投資，如《美國復蘇與再投資法案》通過的為開發風能的9300萬美元投資，像風能和生物燃料這樣的重要可替代能源卻僅占了當今市場份額的l%。

　　能源和可持續發展方面的專家稱，要滿足將來的能源需求，可能要依賴于多種解決方案，既包括傳統能源又包括可替代能源。

　　答案及解析

　　&n

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