2015考研英语阅读传递快乐的使者
<p> <span word="Transporter">Transporter</span> <span word="of">of</span> <span word="delight">delight</span></p><p> 传递快乐的使者</p><p> <span word="Happiness">Happiness</span> <span word="is">is</span> <span word="in">in</span> <span word="your">your</span> <span word="DNA">DNA</span>; <span word="and">and</span> <span word="different">different</span> <span word="races">races</span> <span word="mayhave">mayhave</span> <span word="different">different</span> <span word="propensities">propensities</span> <span word="for">for</span> <span word="it">it</span></p><p> 基因决定幸福;而不同种族的幸福倾向不尽相同</p><p> <span word="Born">Born</span> <span word="smiling">smiling</span>?</p><p> 天生会笑?</p><p> <span word="THE">THE</span> <span word="idea">idea</span> <span word="that">that</span> <span word="the">the</span> <span word="human">human</span> <span word="personality">personality</span> <span word="is">is</span> <span word="a">a</span> <span word="blank">blank</span> <span word="slate">slate</span>, <span word="to">to</span> <span word="be">be</span> <span word="written">written</span> <span word="upon">upon</span> <span word="only">only</span> <span word="by">by</span> <span word="experience">experience</span>,<span word="prevailed">prevailed</span> <span word="for">for</span> <span word="most">most</span> <span word="of">of</span> <span word="the">the</span> <span word="second">second</span> <span word="half">half</span> <span word="of">of</span> <span word="the">the</span> 20<span word="th">th</span> <span word="century">century</span>. <span word="Over">Over</span> <span word="the">the</span> <span word="past">past</span> <span word="two">two</span> <span word="decades">decades</span>, <span word="however">however</span>,<span word="that">that</span> <span word="notion">notion</span> <span word="has">has</span> <span word="been">been</span> <span word="undermined">undermined</span>. <span word="Studies">Studies</span> <span word="comparing">comparing</span> <span word="identical">identical</span> <span word="with">with</span> <span word="non">non</span>-<span word="identical">identical</span> <span word="twins">twins</span> <span word="havehelped">havehelped</span> <span word="to">to</span> <span word="establish">establish</span> <span word="the">the</span> <span word="heritability">heritability</span> <span word="of">of</span> <span word="many">many</span> <span word="aspects">aspects</span> <span word="of">of</span> <span word="behaviour">behaviour</span>, <span word="and">and</span> <span word="examination">examination</span> <span word="of">of</span> <span word="DNA">DNA</span> <span word="hasuncovered">hasuncovered</span> <span word="some">some</span> <span word="of">of</span> <span word="the">the</span> <span word="genes">genes</span> <span word="responsible">responsible</span>. <span word="Recent">Recent</span> <span word="work">work</span> <span word="on">on</span> <span word="both">both</span> <span word="these">these</span> <span word="fronts">fronts</span> <span word="suggests">suggests</span> <span word="thathappiness">thathappiness</span> <span word="is">is</span> <span word="highly">highly</span> <span word="heritable">heritable</span>.</p><p> 人的性格有如一张白纸，唯有经历才能在上面挥毫泼墨这个观点几乎在整个二十世纪下半叶都十分流行。然而近二十年来，此观点的说服力已逐渐减弱。同卵及异卵双胞胎的对比研究为证明行为的许多方面的遗传性带来了许多帮助，<span word="DNA">DNA</span>检查也发现了与此相关的部分基因。最近，对这两个前沿问题的研究表明幸福感在很大程度上是遗传的。</p><p> <span word="As">As</span> <span word="any">any</span> <span word="human">human</span> <span word="being">being</span> <span word="knows">knows</span>, <span word="many">many</span> <span word="factors">factors</span> <span word="govern">govern</span> <span word="whether">whether</span> <span word="people">people</span> <span word="are">are</span> <span word="happy">happy</span> <span word="or">or</span> <span word="unhappy">unhappy</span>.<span word="External">External</span> <span word="circumstances">circumstances</span> <span word="are">are</span> <span word="important">important</span>: <span word="employed">employed</span> <span word="people">people</span> <span word="are">are</span> <span word="happier">happier</span> <span word="than">than</span> <span word="unemployed">unemployed</span> <span word="ones">ones</span> <span word="andbetter">andbetter</span>-<span word="off">off</span> <span word="people">people</span> <span word="than">than</span> <span word="poor">poor</span> <span word="ones">ones</span>. <span word="Age">Age</span> <span word="has">has</span> <span word="a">a</span> <span word="role">role</span>, <span word="too">too</span>: <span word="the">the</span> <span word="young">young</span> <span word="and">and</span> <span word="the">the</span> <span word="old">old</span> <span word="are">are</span> <span word="happier">happier</span> <span word="thanthe">thanthe</span> <span word="middle">middle</span>-<span word="aged">aged</span>. <span word="But">But</span> <span word="personality">personality</span> <span word="is">is</span> <span word="the">the</span> <span word="single">single</span> <span word="biggest">biggest</span> <span word="determinant">determinant</span>: <span word="extroverts">extroverts</span> <span word="are">are</span> <span word="happierthan">happierthan</span> <span word="introverts">introverts</span>, <span word="and">and</span> <span word="confident">confident</span> <span word="people">people</span> <span word="happier">happier</span> <span word="than">than</span> <span word="anxious">anxious</span> <span word="ones">ones</span>.</p>
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