2. 外语
  3. Mike Johnson’s new book, Catching the Rain: A Guide to Residential Rain Barrel Use, debuted at the top of bestseller charts last

Mike Johnson’s new book, Catching the Rain: A Guide to Residential Rain Barrel Use, debuted at the top of bestseller charts last

admin2012-04-26  46
问题 Mike Johnson’s new book, Catching the Rain: A Guide to Residential Rain Barrel Use, debuted at the top of bestseller charts last week. For those who are unfamiliar with rain barrel technology, it utilizes a system of 50-gallon plastic barrels to capture rainwater running off a house’s roof. Making use of rainwater is an ancient practice, but it has been reinvented in recent decades as an integral component of the green living movement.
    As Johnson describes in his book, the most attractive aspect of rain barrel systems for many people is the potential monthly savings on water and wastewater bills. He goes into great detail on this point, analyzing real-world data from the past 20 years to calculate an average annual savings for a family of four of $120 as a result of rain barrel use. Johnson’s conclusion is that, since most barrel systems only run around $300, the purchase begins to generate savings sometime during the third year.
    Of course, anyone who’s the least bit environmentally minded knows that using rainwater to water plants and lawns is also good for the Earth. And Johnson devotes two chapters of the book to explaining why. Other topics covered include how to properly install a rain barrel system and how to find bargains on used rain barrels. In this writer’s opinion, Catching the Rain is a must-read for every creative, responsible homeowner.
What is the main advantage of a rain barrel system?
选项 A、It benefits the Earth by recycling water.
B、Its efficiency increases in areas with little rainfall.
C、It utilizes technology that is centuries old.
D、It results in lower utility payments.
答案D
解析
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