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  3. America, unhappily, is bullish on garbage. Our production of refuse, now about 160 million tons a year, will rise to 193 million

America, unhappily, is bullish on garbage. Our production of refuse, now about 160 million tons a year, will rise to 193 million

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问题       America, unhappily, is bullish on garbage. Our production of refuse, now about 160 million tons a year, will rise to 193 million tons by the end of the century  【21】______   nothing is done. This growing effluence of affluence, 3.5 pounds a day for every American, is a  【22】______   of our consumer society,  【23】______   watchwords are "convenience", "ready to use" and "throw away". And it has become a major national environmental issue. forcing citizens,  【24】______   officials and private companies to  【25】______   serious thought to rubbish.
      The contentious reality is that the  【26】______   cheap and simple solution to trashdumping it in a landfill just beyond the edge of town  【27】______   no longer workable, particularly around major cities. Old dumps, which now get 8% of all garbage, are filling up, end new  【28】______   have become virtually  【29】______   to build with the result of skyrocketing land costs,  【30】______   stringent environmental regulations and shrill public opposition  【31】______   new landfills "in my backyard". "Five years from now,"  【32】______   Bruce Waddle. director of the Environmental Protection Agency’s municipal-solid-waste program, "we’ll have only half the number of landfills operating."
      With this grim prospect, new methods are required, all variations on the only four ways available to deal  【33】______   garbage: bury it, burn it, recycle it or don’t make as  【34】______   in the first place. What’s needed, experts say, is sophisticated  【35】______   fallout, called "integrated waste management" An  【36】______    valuable items are sorted out of the waste stream and turned  【37】______   new products, and the rest are burned cleanly in a furnace that also produces steam to  【38】______   electricity. Only the ash,  【39】______   of the original volume of trash, is then disposed  【40】______   in carefully engineered landfills.  
【27】
选项 A、has
B、are
C、is
D、have
答案C
解析 考查主谓一致与系动词。由句子结构可知，从句主语是the...solution，为单数可数名词，因此谓语应用单数形式。而workable是形容词作表语，谓语应是系动词，故选C 。
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