英语六级标准听力测试模拟二SectionB答案解析
<p> <span word="Passage">Passage</span> <span word="One">One</span></p><p> <span word="Take">Take</span> <span word="care">care</span> <span word="of">of</span> <span word="your">your</span> <span word="teeth">teeth</span> <span word="and">and</span> <span word="your">your</span> <span word="teeth">teeth</span> <span word="will">will</span> <span word="take">take</span> <span word="care">care</span> <span word="of">of</span> <span word="you">you</span>. <span word="Your">Your</span> <span word="teeth">teeth</span> <span word="are">are</span> <span word="a">a</span> <span word="living">living</span> <span word="part">part</span> <span word="of">of</span> <span word="your">your</span> <span word="body">body</span>. <span word="They">They</span> <span word="have">have</span> <span word="nerves">nerves</span> <span word="and">and</span> <span word="blood">blood</span> <span word="vessels">vessels</span>. <span word="Diseased">Diseased</span> <span word="teeth">teeth</span> <span word="can">can</span> <span word="cause">cause</span> <span word="pain">pain</span>, <span word="die">die</span>, <span word="and">and</span> <span word="fall">fall</span> <span word="out">out</span>. <span word="False">False</span> <span word="teeth">teeth</span> <span word="often">often</span> <span word="do">do</span> <span word="not">not</span> <span word="work">work</span> <span word="as">as</span> <span word="well">well</span> <span word="as">as</span> <span word="natural">natural</span> <span word="teeth">teeth</span>. <span word="If">If</span> <span word="you">you</span> <span word="do">do</span> <span word="take">take</span> <span word="proper">proper</span> <span word="care">care</span> <span word="of">of</span> <span word="your">your</span> <span word="teeth">teeth</span>, <span word="you">you</span> <span word="can">can</span> <span word="keep">keep</span> <span word="them">them</span> <span word="your">your</span> <span word="entire">entire</span> <span word="life">life</span>.</p><p> <span word="Plaque">Plaque</span> <span word="is">is</span> <span word="the">the</span> <span word="main">main</span> <span word="enemy">enemy</span> <span word="of">of</span> <span word="healthy">healthy</span> <span word="teeth">teeth</span>. <span word="Everyone">Everyone</span> <span word="has">has</span> <span word="plaque">plaque</span>. <span word="It">It</span> <span word="is">is</span> <span word="a">a</span> <span word="sticky">sticky</span>, <span word="colorless">colorless</span> <span word="film">film</span> <span word="that">that</span> <span word="coats">coats</span> <span word="the">the</span> <span word="teeth">teeth</span>. <span word="Plaque">Plaque</span> <span word="is">is</span> <span word="always">always</span> <span word="forming">forming</span> <span word="on">on</span> <span word="the">the</span> <span word="teeth">teeth</span>. <span word="Plaque">Plaque</span> <span word="that">that</span> <span word="is">is</span> <span word="left">left</span> <span word="on">on</span> <span word="the">the</span> <span word="teeth">teeth</span> <span word="for">for</span> <span word="some">some</span> <span word="time">time</span> <span word="hardens">hardens</span>. <span word="The">The</span> <span word="result">result</span> <span word="is">is</span> <span word="tooth">tooth</span> <span word="decay">decay</span> <span word="and">and</span> <span word="gum">gum</span> <span word="disease">disease</span>. <span word="The">The</span> <span word="bacteria">bacteria</span> <span word="in">in</span> <span word="plaque">plaque</span> <span word="live">live</span> <span word="on">on</span> <span word="sugar">sugar</span>. <span word="They">They</span> <span word="change">change</span> <span word="sugar">sugar</span> <span word="into">into</span> <span word="acids">acids</span>. <span word="If">If</span> <span word="left">left</span> <span word="untreated">untreated</span>, <span word="decay">decay</span> <span word="goes">goes</span> <span word="deeper">deeper</span> <span word="and">and</span> <span word="deeper">deeper</span> <span word="into">into</span> <span word="the">the</span> <span word="tooth">tooth</span>. <span word="After">After</span> <span word="a">a</span> <span word="while">while</span> <span word="the">the</span> <span word="decay">decay</span> <span word="reaches">reaches</span> <span word="the">the</span> <span word="nerves">nerves</span> <span word="and">and</span> <span word="blood">blood</span> <span word="vessels">vessels</span> <span word="of">of</span> <span word="the">the</span> <span word="inner">inner</span> <span word="tooth">tooth</span>. <span word="By">By</span> <span word="the">the</span> <span word="time">time</span> <span word="this">this</span> <span word="happens">happens</span>, <span word="the">the</span> <span word="tooth">tooth</span> <span word="has">has</span> <span word="probably">probably</span> <span word="started">started</span> <span word="to">to</span> <span word="ache">ache</span>.</p><p> <span word="In">In</span> <span word="addition">addition</span> <span word="to">to</span> <span word="tooth">tooth</span> <span word="decay">decay</span>, <span word="there">there</span> <span word="are">are</span> <span word="also">also</span> <span word="gum">gum</span> <span word="diseases">diseases</span> <span word="to">to</span> <span word="watch">watch</span> <span word="out">out</span> <span word="for">for</span>. <span word="The">The</span> <span word="bacteria">bacteria</span> <span word="in">in</span> <span word="plaque">plaque</span> <span word="make">make</span> <span word="poisons">poisons</span> <span word="that">that</span> <span word="attack">attack</span> <span word="the">the</span> <span word="gums">gums</span>. <span word="Teeth">Teeth</span> <span word="become">become</span> <span word="loose">loose</span> <span word="and">and</span> <span word="may">may</span> <span word="fall">fall</span> <span word="out">out</span>. <span word="Adults">Adults</span> <span word="lose">lose</span> <span word="most">most</span> <span word="teeth">teeth</span> <span word="this">this</span> <span word="way">way</span>.</p><p> <span word="Gum">Gum</span> <span word="disease">disease</span> <span word="starts">starts</span> <span word="slowly">slowly</span>. <span word="There">There</span> <span word="may">may</span> <span word="be">be</span> <span word="no">no</span> <span word="pain">pain</span>. <span word="As">As</span> <span word="a">a</span> <span word="rule">rule</span>, <span word="gum">gum</span> <span word="disease">disease</span> <span word="first">first</span> <span word="appears">appears</span> <span word="as">as</span> <span word="swelling">swelling</span>. <span word="Then">Then</span> <span word="the">the</span> <span word="gums">gums</span> <span word="become">become</span> <span word="tender">tender</span>. <span word="There">There</span> <span word="also">also</span> <span word="may">may</span> <span word="be">be</span> <span word="bleeding">bleeding</span>. <span word="To">To</span> <span word="heal">heal</span> <span word="diseased">diseased</span> <span word="gums">gums</span>, <span word="your">your</span> <span word="teeth">teeth</span> <span word="need">need</span> <span word="one">one</span> <span word="or">or</span> <span word="more">more</span> <span word="dental">dental</span> <span word="cleanings">cleanings</span>. <span word="Regular">Regular</span> <span word="visits">visits</span> <span word="to">to</span> <span word="your">your</span> <span word="dentist">dentist</span> <span word="are">are</span> <span word="a">a</span> <span word="must">must</span>.</p><p> <span word="Many">Many</span> <span word="people">people</span> <span word="worry">worry</span> <span word="about">about</span> <span word="bad">bad</span> <span word="teeth">teeth</span>. <span word="This">This</span> <span word="may">may</span> <span word="result">result</span> <span word="from">from</span> <span word="several">several</span> <span word="causes">causes</span>. <span word="It">It</span> <span word="could">could</span> <span word="be">be</span> <span word="due">due</span> <span word="to">to</span> <span word="gum">gum</span> <span word="disease">disease</span> <span word="or">or</span> <span word="leftover">leftover</span> <span word="bits">bits</span> <span word="of">of</span> <span word="food">food</span>. <span word="It">It</span> <span word="may">may</span> <span word="be">be</span> <span word="caused">caused</span> <span word="by">by</span> <span word="plaque">plaque</span>. <span word="Decayed">Decayed</span> <span word="teeth">teeth</span> <span word="can">can</span> <span word="cause">cause</span> <span word="bad">bad</span> <span word="breath">breath</span>.</p>
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