【典例1】 The global energy crisis is approaching. What can we do? Here are some steps you can take。
Cooling puts the greatest stress on your summer energy bill and the power grid(电网). Just as a tune-up for your car can improve your gas mileage, a yearly tune-up of your heating and cooling system can improve efficiency and comfort. Clean or replaces filters monthly or as needed。
……
Drive the car that gets better gas mileage whenever possible if you own more than one vehicle. If you drive 12,500 miles a year, switching 10 percent of your trips from a car that gets 20 miles per gallon to one that gets 30 mpg will save you more than £65 per year。
Carpool. The average U.S. commuter(乘车上班族) could save about £260 a year by sharing cars twice a week with two people in a car that gets 20.1 mpg—assuming the three passengers share the cost of gas.
This passage is mainly about ________。
A. energy-saving tips B. fuel-saving tips
C. do-it-yourself tips D. environment-protecting tips
【解析】 本文主要介绍了如何节约能源。本文是一篇科普文章,主题很明显,文章一开始就点明了主题,接下来整篇文章都是围绕如何save energy展开,而save fuel仅仅只是其中的一部分。故选A。针对主旨大意类题目,应采用快速阅读法(Skimming)浏览全文。在阅读时,应特别注意文章的开头、结尾及段落的段首句和段尾句,因为他们往往名包含文章的中心议题。
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