The planet’s oldest and largest lake, Baikal is about the size of Belgium and accounts for a fifth of the world’s fresh water re

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问题     The planet’s oldest and largest lake, Baikal is about the size of Belgium and accounts for a fifth of the world’s fresh water reserves. It is a precious resource, an area of surpassing beauty and to some extent, the very symbol of our nation. For several years, newspapers had been publishing Manning reports on threats to Baikal from industrial construction along its shores, the felling and rafting of timber and pulp mill’s discharge of chemical wastes.
    Documents revealed that Orlov, the prime minister in charge of the paper industry, had ordered construction of a large cellulose complex on the lake’s shores to produce a particularly durable rayon cord for airplane tires with the assumption that the pure water would facilitate the chemical process resulting in stronger fibers, and the story goes that Orlov had chosen the site by simply pointing to a place on the shoreline while cruising in a motorboat with some old friends. Tile site, however, turned out to be a seismically active region, and the buildings, while supported by steel piles, are still vulnerable to the major earthquakes that have occurred there once or twice a century.
    The pure water helped the process, whose final product proved out-of-date, aviation industry switching to metallic cord. The variety of fish, unfortunately, fell victim to the toxic waste, the fragile ecological balance of the region threatened. Those concerned proposed that the lakeshores be closed to new industry and existing enterprises be moved but they encountered tough resistance from officials defending their decision and saving face by insisting on the complex’s importance.  Of course, what you see on pictures is still a beauty but the lake is no longer a home to more than 1,000 species of plants and animals unknown anywhere else.  
According to the passage, the plant’s product ______.

选项 A、became the most popular of its kind because of the pure water of the lake
B、did not succeed because the water was used in a wrong way
C、did not keep up with the development of the tire industry and was finally stopped
D、could not find its proper place in the market because people now turned to a newer type

答案D

解析
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