题目

阅读理解 On a clear night in 1994, an earthquake hit Los Angeles and caused a city-wide power cut just before dawn. Awake in surprise, some residents who had escaped outside called various emergency centers to report a mysterious cloud over head. That unusual object turned out to be the hand of the Milky Way, which had long been unclear from view by the city's lights. Arguably, the light bulb is the most transformative invention humans have introduced to this planet. By pressing a switch or pushing a button, we can lift the veil (面纱) that would naturally cover our lives each night. Now, we work long after the sun sinks below the horizon. We play games outside far into the night. We more safely wander around city streets after dark. But if light bulbs have a dark side, it's that they have stolen the night. The extra light brightening our environments is endangering ecosystems by harming animals whose life cycles depend on the dark. We're endangering ourselves by changing the biochemical rhythms that normally go out and flow with natural light levels. And in a basic sense, we've lost our connection to nighttime skies, on the basis of which our ancestors made up their star-related stories, timed the planting and harvesting of crops, and inferred the physical laws governing the universe. "The disappearance of the night sky is tied up with our ever more fast-paced world," says Amanda Gormley of the Tucson-based International Dark-Sky Association. "We lose something vital; we lose a part of ourselves when we lose access to the night sky. We lose that sense of stillness that should be right over our heads every night." Now, as the consequences of light pollution arise out of the shadows and into the spotlight, cities, regulatory agencies, and conservation groups are seeking solutions. And in some areas, lots of improvements are already in place, powered by a new wave of cheaper, more energy-saving light bulbs. （1） Why is the earthquake hitting Los Angeles mentioned? A . To witness its serious damage. B . To lead in the topic of the text. C . To state its influence on the city. D . To tell backgrounds of the text. （2） What is the fourth paragraph mainly about? A . Dark nights. B . Endangered ecosystems. C . Light pollution. D . Brightened environments. （3） How does the author sound in the last paragraph? A . Hopeful. B . Concerned. C . Doubtful. D . Academic. （4） What can be a suitable title for the text? A . Bulbs: A Revolutionary Invention to Humans B . Conflict: A World with Light and Stillness C . Earth Is Paying the Price for Brighter Nights D . The World Cannot Go Without the Night Sky 答案： B C A C

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