You will hear a recording. Type the missing words in each blank.

In America, there is certainly the potential for (1) …………………….. conflict. Categorically, our (2) …………………….. metroplexes problematic and will not be sustainable in a post-oil future  and (3) …………………. the wishes and yearnings of many people, the truth is that no combination of alternative fuels will (4) ……………….. us to continue living at this scale. Some of our cities will not make it. Phoenix, Tucson, and the other Sunbelt cities will dry up and blow away. In Las Vegas, the (5) …………………….. will be over. Other mega-cities will have to downscale or face extreme (6) ………………………… One thing that almost nobody is paying attention to: the skyscraper will not be a (7) …………………… building type in our energy-scarce future. Six or seven stories must be the practical limit in a new age when electric supply is not necessarily as (8) ………………………. as it has been in our time.

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