英语导读1000句（二十九）
<p> <span word="Section">Section</span>29 <span word="Global">Global</span> <span word="Warming">Warming</span></p><p> <span word="Some">Some</span> <span word="people">people</span> <span word="say">say</span> <span word="the">the</span> <span word="earth">earth</span> <span word="is">is</span> <span word="getting">getting</span> <span word="warmer">warmer</span>.有人说地球正在变暖。</p><p> <span word="They">They</span> <span word="blame">blame</span> <span word="something">something</span> <span word="called">called</span> <span word="greenhouse">greenhouse</span> <span word="gases">gases</span>.人们把它归结为温室效应。</p><p> <span word="The">The</span> <span word="greenhouse">greenhouse</span> <span word="gasses">gasses</span> <span word="destroy">destroy</span> <span word="the">the</span> <span word="higher">higher</span> <span word="atmosphere">atmosphere</span> <span word="that">that</span> <span word="keeps">keeps</span> <span word="our">our</span> <span word="planet">planet</span> <span word="from">from</span> <span word="getting">getting</span> <span word="too">too</span> <span word="hot">hot</span>.温室效应破坏了高空大气层，而高空大气层可以保护地球以免过热。</p><p> <span word="CFCs">CFCs</span> <span word="are">are</span> <span word="the">the</span> <span word="gases">gases</span> <span word="that">that</span> <span word="cause">cause</span> <span word="one">one</span> <span word="of">of</span> <span word="the">the</span> <span word="biggest">biggest</span> <span word="problems">problems</span> <span word="in">in</span> <span word="global">global</span> <span word="warming">warming</span>.氟氯化碳是导致全球变暖的主要气体。</p><p> <span word="CFCs">CFCs</span> <span word="destroy">destroy</span> <span word="some">some</span> <span word="of">of</span> <span word="the">the</span> <span word="ozone">ozone</span> <span word="that">that</span> <span word="is">is</span> <span word="in">in</span> <span word="the">the</span> <span word="higher">higher</span> <span word="atmosphere">atmosphere</span>.氟氯化碳破坏了高空的部分臭氧层。</p><p> <span word="The">The</span> <span word="ozone">ozone</span> <span word="layer">layer</span> <span word="helps">helps</span> <span word="us">us</span> <span word="by">by</span> <span word="filtering">filtering</span> <span word="out">out</span> <span word="some">some</span> <span word="of">of</span> <span word="the">the</span> <span word="harmful">harmful</span> <span word="ultraviolet">ultraviolet</span> <span word="rays">rays</span> <span word="from">from</span> <span word="the">the</span> <span word="sun">sun</span>.臭氧层过滤了阳光中的部分有害的紫外线。</p><p> <span word="These">These</span> <span word="rays">rays</span> <span word="can">can</span> <span word="cause">cause</span> <span word="skin">skin</span> <span word="cancer">cancer</span> <span word="in">in</span> <span word="humans">humans</span>.这些射线会使人致癌。</p><p> <span word="These">These</span> <span word="rays">rays</span> <span word="can">can</span> <span word="also">also</span> <span word="help">help</span> <span word="to">to</span> <span word="heat">heat</span> <span word="up">up</span> <span word="our">our</span> <span word="planet">planet</span>.这些射线也会使我们的星球升温。</p><p> <span word="Over">Over</span> <span word="the">the</span> <span word="polar">polar</span> <span word="ice">ice</span> <span word="caps">caps</span>, <span word="we">we</span> <span word="now">now</span> <span word="have">have</span> <span word="holes">holes</span> <span word="in">in</span> <span word="the">the</span> <span word="ozone">ozone</span> <span word="layer">layer</span>.在两极的冰川地带，人们发现了臭氧层的破洞。</p><p> <span word="These">These</span>, <span word="people">people</span> <span word="believe">believe</span>, <span word="contribute">contribute</span> <span word="to">to</span> <span word="worldrsquo">worldrsquo</span>;<span word="s">s</span> <span word="global">global</span> <span word="warming">warming</span>.人们认为这些是因为地球变暖导致的。</p><p> <span word="One">One</span> <span word="of">of</span> <span word="the">the</span> <span word="effects">effects</span> <span word="it">it</span> <span word="could">could</span> <span word="have">have</span> <span word="is">is</span> <span word="to">to</span> <span word="speed">speed</span> <span word="up">up</span> <span word="the">the</span> <span word="melting">melting</span> <span word="of">of</span> <span word="the">the</span> <span word="polar">polar</span> <span word="ice">ice</span> <span word="caps">caps</span>.其影响之一，就是加速极地冰川的融化。</p>
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