2. 考研
  3. The population of the United States is only 6% the world’s population, but Americans (1)_____ one third of all the energy (2)___

The population of the United States is only 6% the world’s population, but Americans (1)_____ one third of all the energy (2)___

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问题     The population of the United States is only 6% the world’s population, but Americans (1)_____ one third of all the energy (2)_____ 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 (3)_____ the limited supplies of oil in particular, Americans are becoming aware to the need to (4)_____ energy. In California we have a California Energy Commission which has set up in the past five years to (5)_____ plan for our future energy rise. We have (6)_____ laws in California to help us conserve energy. First of all, our houses in California have been very (7)_____ of energy in the past. They were not (8)_____ very carefully and so the heat would go out of the house very rapidly. Now we require that the homes have a (9)_____ level of insulation, and so the homes built now are much more (10)_____.
     (11)_____, in transportation (12)_____ 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) (13)_____ for the kind of thing we need to develop more in the United States. Automobiles are also becoming more (14)_____ The smaller automobile with efficient engine can help to conserve a large amount of energy along with planning our (15)_____ more carefully.
    Many different studies have shown that we could (16)_____ our energy consumption by (17)_____ half or two thirds and still have the (18)_____ quality of life. And many different types of technologies are currently being researched as to (19)_____ they can be built to use (20)_____ energy and still supply the same service.

选项 A、effective
B、sufficient
C、efficient
D、deficient
答案C
解析 形容词辨析题。effective"有效果的，能起作用的"；sufficient"充分的，足够的"；efficient"效率高的"；deficient"不充足的"。本句意为"现在的房屋节能效率更高了"。
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