ChaseDream

标题: 求助: GWD 8 15题 [打印本页]

作者: amy0208    时间: 2009-12-5 22:53
标题: 求助: GWD 8 15题
Q15:

Brochure:  Help conserve our city’s water supply.  By converting the landscaping in your yard to a water-conserving landscape, you can greatly reduce your outdoor water use.  A water-conserving landscape is natural and attractive, and it also saves you money.



Criticism:  For most people with yards, the savings from converting to a water-conserving landscape cannot justify the expense of new landscaping, since typically the conversion would save less than twenty dollars on a homeowner’s yearly water bills.



Which of the following, if true, provides the best basis for a rebuttal of the criticism?


  1. Even homeowners whose yards do not have water-conserving landscapes can conserve water by installing water-saving devices in their homes.
  2. A conventional landscape generally requires a much greater expenditure on fertilizer and herbicide than does a water-conserving landscape.
  3. A significant proportion of the residents of the city live in buildings that do not have yards.
  4. It costs no more to put in water-conserving landscaping than it does to put in conventional landscaping.

Some homeowners use more water to maintain their yards than they use for all other purposes combined.

答案选B,为什么我觉得都不对呢。
作者: genius_fang    时间: 2009-12-6 23:41
criticism说新的设备节约的钱不到20dollars,还抵不上换装备花掉的钱。
B:原先的设备需要大量的额外开销,也就是说新的设备可以在这上面省钱,削弱criticism不省钱的结论!




欢迎光临 ChaseDream (https://forum.chasedream.com/) Powered by Discuz! X3.3