职称英语卫生类考试考前每日一练(24)
<p> 职称英语卫生类考试考前每日一练</p><p> <span word="Sunbath">Sunbath</span> <span word="and">and</span> <span word="Skin">Skin</span> <span word="Cancer">Cancer</span></p><p> <span word="In">In</span> <span word="the">the</span> <span word="summer">summer</span>, <span word="millions">millions</span> <span word="of">of</span> <span word="Americans">Americans</span> <span word="will">will</span> <span word="offer">offer</span> <span word="up">up</span> <span word="their">their</span> <span word="bodies">bodies</span> <span word="to">to</span> <span word="the">the</span> <span word="sun">sun</span> <span word="rays">rays</span>. <span word="A">A</span> <span word="tan">tan</span> <span word="indicates">indicates</span> <span word="health">health</span> <span word="and">and</span> <span word="beauty">beauty</span>, <span word="and">and</span> <span word="most">most</span> <span word="sun">sun</span> <span word="worshippers">worshippers</span> <span word="will">will</span> <span word="sacrifice">sacrifice</span> <span word="a">a</span> <span word="lot">lot</span> <span word="to">to</span> <span word="achieve">achieve</span> <span word="it">it</span>, <span word="in">in</span>-<span word="eluding">eluding</span> <span word="themselves">themselves</span>.</p><p> <span word="With">With</span> <span word="each">each</span> <span word="hour">hour</span>，<span word="the">the</span> <span word="suns">suns</span> <span word="ultraviolet">ultraviolet</span> <span word="radiationproduces">radiationproduces</span> <span word="irreversibledamage">irreversibledamage</span>，<span word="hastening">hastening</span> <span word="the">the</span> <span word="development">development</span> <span word="of">of</span> <span word="unsightly">unsightly</span> <span word="wrinkles">wrinkles</span>.<span word="And">And</span> <span word="with">with</span> <span word="each">each</span> <span word="year">year</span> <span word="OII">OII</span> <span word="the">the</span> <span word="beach">beach</span> <span word="or">or</span> <span word="rooftop">rooftop</span>，<span word="the">the</span> <span word="sunbather">sunbather</span> <span word="increases">increases</span> <span word="his">his</span> <span word="risk">risk</span> <span word="of">of</span> <span word="getting">getting</span> <span word="skin">skin</span> <span word="cancer">cancer</span>.<span word="Skin">Skin</span> <span word="cancer">cancer</span> <span word="is">is</span> <span word="by">by</span> <span word="far">far</span> <span word="the">the</span> <span word="most">most</span> <span word="common">common</span> <span word="form">form</span> <span word="of">of</span> <span word="cancer">cancer</span>.<span word="An">An</span> <span word="estimated">estimated</span> 400，00 <span word="new">new</span> <span word="cases">cases</span> <span word="will">will</span> <span word="be">be</span> <span word="blamed">blamed</span> <span word="this">this</span> <span word="year">year</span> <span word="in">in</span> <span word="the">the</span> <span word="United">United</span> <span word="States">States</span>.<span word="and">and</span> <span word="almost">almost</span> <span word="all">all</span> <span word="of">of</span> <span word="them">them</span> <span word="can">can</span> <span word="be">be</span> <span word="blamed">blamed</span> <span word="on">on</span> <span word="over">over</span>-<span word="exposure">exposure</span> <span word="to">to</span> <span word="the">the</span> <span word="sun">sun</span>.</p><p> <span word="Fortunately">Fortunately</span>，<span word="most">most</span> <span word="of">of</span> <span word="these">these</span> <span word="cancers">cancers</span> <span word="are">are</span> <span word="highly">highly</span> <span word="curable">curable</span>.<span word="I">I</span>3<span word="ut">ut</span> <span word="they">they</span> <span word="can">can</span> <span word="he">he</span> <span word="disfiguring">disfiguring</span> <span word="arm">arm</span> <span word="take">take</span> <span word="time">time</span> <span word="to">to</span> <span word="treat">treat</span>.<span word="For">For</span> <span word="that">that</span> <span word="reason">reason</span>，<span word="sun">sun</span> <span word="worshippers">worshippers</span> <span word="should">should</span> <span word="treat">treat</span> <span word="deity">deity</span> <span word="with">with</span> <span word="a">a</span> <span word="good">good</span> <span word="deal">deal</span> <span word="of">of</span> <span word="awe">awe</span>.<span word="Sunburn">Sunburn</span>，<span word="of">of</span> <span word="course">course</span>，<span word="is">is</span> <span word="the">the</span> <span word="initial">initial</span> <span word="hazard">hazard</span> <span word="posed">posed</span> <span word="by">by</span> <span word="UV">UV</span> <span word="radiation">radiation</span>.<span word="Prolonged">Prolonged</span> <span word="exposure">exposure</span> <span word="to">to</span> <span word="UV">UV</span>，<span word="however">however</span>，<span word="interferes">interferes</span> <span word="with">with</span> <span word="the">the</span> <span word="production">production</span> <span word="of">of</span> <span word="collagen">collagen</span> <span word="fibersin">fibersin</span> <span word="the">the</span> <span word="dermis">dermis</span>，<span word="causing">causing</span> <span word="the">the</span> <span word="skin">skin</span> <span word="to">to</span> <span word="lose">lose</span> <span word="elasticityand">elasticityand</span> <span word="creating">creating</span> <span word="premature">premature</span> <span word="wrinkles">wrinkles</span>.<span word="Further">Further</span> <span word="deteriorationof">deteriorationof</span> <span word="the">the</span> <span word="dermis">dermis</span> <span word="deprives">deprives</span> <span word="t">t</span> <span word="he">he</span> <span word="epidermisof">epidermisof</span> <span word="nutrition">nutrition</span> <span word="and">and</span> <span word="causes">causes</span> <span word="it">it</span> <span word="to">to</span> <span word="become">become</span> <span word="thin">thin</span> <span word="and">and</span> <span word="dry">dry</span>.</p><p> <span word="Cancer">Cancer</span> <span word="is">is</span> <span word="UVs">UVs</span> <span word="final">final</span> <span word="result">result</span>.<span word="Shortwave">Shortwave</span> <span word="radiant">radiant</span> <span word="energy">energy</span>，<span word="especially">especially</span> <span word="from">from</span> <span word="the">the</span> <span word="UV">UV</span> <span word="B">B</span> <span word="band">band</span>，<span word="breaks">breaks</span> <span word="the">the</span> <span word="strandsof">strandsof</span> <span word="DNA">DNA</span>.<span word="Enzymeswork">Enzymeswork</span> <span word="constantly">constantly</span> <span word="trearrange">trearrange</span> <span word="the">the</span> <span word="DNA">DNA</span> <span word="into">into</span> <span word="proper">proper</span> <span word="sequence">sequence</span>.<span word="but">but</span> <span word="with">with</span> <span word="repeated">repeated</span> <span word="UV">UV</span> <span word="exposure">exposure</span>，<span word="the">the</span> <span word="repair">repair</span> <span word="process">process</span> <span word="may">may</span> <span word="eventually">eventually</span> <span word="break">break</span> <span word="down">down</span>.<span word="Then">Then</span> <span word="the">the</span> <span word="mutantDNA">mutantDNA</span> <span word="may">may</span> <span word="produce">produce</span> <span word="a">a</span> <span word="colony">colony</span> <span word="of">of</span> <span word="cancer">cancer</span> <span word="cells">cells</span>.<span word="But">But</span> <span word="skin">skin</span> <span word="cancer">cancer</span> <span word="may">may</span> <span word="be">be</span> <span word="avoided">avoided</span> <span word="with">with</span> <span word="a">a</span> <span word="good">good</span> <span word="dose">dose</span> <span word="of">of</span> <span word="common">common</span> <span word="sense">sense</span>.<span word="People">People</span> <span word="with">with</span> <span word="fair">fair</span> <span word="skin">skin</span> <span word="and">and</span> <span word="blue">blue</span> <span word="eyes">eyes</span> <span word="who">who</span> <span word="burn">burn</span> <span word="easily">easily</span> <span word="stand">stand</span> <span word="the">the</span> <span word="highest">highest</span> <span word="risk">risk</span>.<span word="Special">Special</span> <span word="danger">danger</span> <span word="spots">spots</span> <span word="are">are</span> <span word="the">the</span> <span word="parts">parts</span> <span word="of">of</span> <span word="the">the</span> <span word="body">body</span> <span word="most">most</span> <span word="constantly">constantly</span> <span word="exposed">exposed</span> <span word="to">to</span> <span word="the">the</span> <span word="sun">sun</span>，<span word="such">such</span> <span word="as">as</span> <span word="the">the</span> <span word="cheeks">cheeks</span>，<span word="nose">nose</span>，<span word="lower">lower</span> <span word="lip">lip</span> <span word="and">and</span> <span word="the">the</span> <span word="ears">ears</span>.<span word="People">People</span> <span word="who">who</span> <span word="have">have</span> <span word="already">already</span> <span word="developed">developed</span> <span word="precancerouslesionsor">precancerouslesionsor</span> <span word="had">had</span> <span word="one">one</span> <span word="skin">skin</span>-<span word="cancer">cancer</span> <span word="growth">growth</span> <span word="stand">stand</span> <span word="a">a</span> <span word="greatly">greatly</span> <span word="increased">increased</span> <span word="chance">chance</span> <span word="of">of</span> <span word="developing">developing</span> <span word="others">others</span>.</p>
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