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  3. Disposing of garbage has been a problem since humans started producing it. More and more people choose to live close together i

Disposing of garbage has been a problem since humans started producing it. More and more people choose to live close together i

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问题     Disposing of garbage has been a problem since humans started producing it. More and more people  choose to live close together in cities, and the waste disposal issue becomes increasingly complex.
    During the eighteenth century, it was customary for several neighboring towns to get together to designate a remote spot as a dumpsite. Residents or trash haulers (运输) would transport household  garbage, rotted or scrap wood, and old possessions to the site. Periodically some of the trash was burned and the rest was buried. The unpleasant sights and smells that resulted were endured because nobody lived nearby.
    Factories, mills, and other industrial facilities also had waste to be disposed of. Those located on rivers often just dumped the unwanted remains into the water. Others built enormous burners with smokestacks(烟窗) to deal with the problem.
    Several factors made these solutions unacceptable to modern society. The first issue is space. Dumps, which are now called landfills, are most needed in densely populated areas. Property is either too expensive or too close to residential neighborhoods. Long-distance trash hauling has been common practice, but once rural areas are refusing to accept garbage from elsewhere, cheap land within trucking distance of major metropolitan areas is almost nonexistent.
    Awareness of pollution dangers has resulted in more strict regulation of waste disposal. Contamination (污染) of rivers, groundwater, land, air is a price people can no longer pay to get rid of garbage.  However, the amount of garbage continues to grow.
    Recycling efforts have become commonplace, and many towns require their residents to participate.  Even the most vigorous and efficient recycling programs, however, can hope to handle only about  50 percent of a city’s reusable waste.
The outdated methods of dealing with garbage are now considered unacceptable because of______.
选项 A、lower efficiency
B、water shortage
C、limited space
D、higher risk
答案C
解析 事实细节题。文章第四段指出，旧的垃圾处理办法不适用于现在的原因包括：空间有限、垃圾处理的成本增加，以及第五段提到的人们对污染危险性意识的提高。四个选项中只有C项与文章内容相符。
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