2. 外语
  3. The population of the United States is only 6% of the world’s population, but Americans 【21】______ one third of all the ener

The population of the United States is only 6% of the world’s population, but Americans 【21】______ one third of all the ener

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问题      The population of the United States is only 6% of the world’s population, but Americans  【21】______    one third of all the energy  【22】______    in the world. This fact alone says that Americans need to use less energy. And because the price of energy had been rising very rapidly  【23】______    the limited supplies of oil in particular, Americans are becoming aware to the need to  【24】______    energy. In California we have a California Energy Commission which has set up in the past five years to  【25】______    plan for our future energy use. We have  【26】______    laws in California to help us conserve energy. First of all, our houses in California have been very  【27】______    of energy in the past. They were not  【28】______    very carefully and so the heat would go out of the house very rapidly. Now we require that the homes have a  【29】______    level of insulation, and so the homes built now are much more  【30】______   .
     【31】______   , in transportation  【32】______    a large percentage of oil energy is used, we need to develop more public transportation. In China, of course you have a very good public transportation system. And it is a (n)  【33】______    for the kind of thing we need to develop more in the United States. Automobiles are also becoming more  【34】______   . The smaller automobile with efficient engine can help to conserve a large amount of energy along with planning our  【35】______    more carefully.
     Many different studies have shown that we could  【36】______    our energy consumption by  【37】______    half or two thirds and still have the  【38】______    quality of life. And many different types of technologies are currently being researched as to  【39】______    they can be built to use  【40】______    energy and still supply the same service.
【33】
选项 A、example
B、responsibility
C、opportunity
D、obligation
答案A
解析 本题考查上下文理解。前面一句话说，中国有发达的公交系统，在节约能源方面，对美国人来说，这是一个很好的例子。四个选项的意思分别是example“例子”；responsibility“责任”；opportunity“机会”；obligation“义务”。结合文章意思判断an example是合适的选项。
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