天下英语品级测验PETS3真题操练

　　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 (根本举措措施)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

　　参考译文

　　据估量，到2050年，天下生齿将从60亿增加至90亿，研讨职员、企业和列国当局已起头动手应答生齿增加会对从食品、水资本到根本举措措施及失业等各方面带来的影响。在这一增加的面前将是对动力的需要，这类需要估计在未来的40年内将翻一番。

　　找到可以也许不变而延续地知足这类需要的资本是我们国度动力宁静的基石，也将是21世纪的首要挑衅之一。这些可替换动力，如生物燃料、风能和太阳能，肯定将会获得投资和成长，并且将在天下动力供给中表演着愈来愈主要的脚色。可是专家指出，即便将一切可替换动力都连系起来，到2050年，也许只能知足天下动力需要的30%摆布。

　　比方，即便有了大额投资，如《美国苏醒与再投资法案》经由过程的为开辟风能的9300万美圆投资，像风能和生物燃料如许的主要可替换动力却仅占了现今市场份额的l%。

　　动力和可延续成长方面的专家称，要知足未来的动力需要，能够要依靠于多种处理计划，既包含传统动力又包含可替换动力。

　　谜底及剖析

　　&n

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