山西省2017高考英语二轮复习专题训练：阅读理解（60）
<p> 山西省2017高考英语二轮复习专题训练：阅读理解（60）</p><p> 阅读下面短文，从短文后所给各题的四个选项（<span word="A">A</span>、<span word="B">B</span>、<span word="C">C</span>和<span word="D">D</span>）中，选出可以填入空白处的最佳选项。</p><p> <span word="A">A</span></p><p> <span word="From">From</span> <span word="the">the</span> <span word="moment">moment</span> <span word="that">that</span> <span word="an">an</span> <span word="animal">animal</span> <span word="is">is</span> <span word="born">born</span> <span word="it">it</span> <span word="has">has</span> <span word="to">to</span> <span word="make">make</span> <span word="decisions">decisions</span> . <span word="It">It</span> <span word="has">has</span> <span word="to">to</span> <span word="decide">decide</span> <span word="which">which</span> <span word="of">of</span> <span word="the">the</span> <span word="things">things</span> <span word="around">around</span> <span word="it">it</span> <span word="are">are</span> <span word="for">for</span> <span word="eating">eating</span> , <span word="and">and</span> <span word="which">which</span> <span word="are">are</span> <span word="to">to</span> <span word="be">be</span> <span word="avoided">avoided</span> ; <span word="when">when</span> <span word="to">to</span> <span word="attack">attack</span> <span word="and">and</span> <span word="when">when</span> <span word="to">to</span> <span word="run">run</span> <span word="away">away</span> . <span word="The">The</span> <span word="animal">animal</span> <span word="is">is</span> , <span word="in">in</span> <span word="fact">fact</span> , <span word="playing">playing</span> <span word="a">a</span> <span word="very">very</span> <span word="dangerous">dangerous</span> <span word="game">game</span> <span word="with">with</span> <span word="its">its</span> <span word="environment">environment</span> , <span word="a">a</span> <span word="game">game</span> <span word="in">in</span> <span word="which">which</span> <span word="it">it</span> <span word="must">must</span> <span word="make">make</span> <span word="decision">decision</span>—<span word="a">a</span> <span word="matter">matter</span> <span word="of">of</span> <span word="life">life</span> <span word="or">or</span> <span word="death">death</span> .</p><p> <span word="A">A</span>nimals’ ability to act reasonably is believed to come partly from what we may call “genetic learning” , which is different from the individual learning that an animal does in the course of its own lifetime . Genetic learning is learning by a species —animals of the same kind—as a whole , and it is achieved by selection of those members of each generation that happen to act in the right way . However , the role of genetic learning depends upon how similar the future environment is to the past . The more important individual experience is likely to be , the less important is genetic learning as a means of getting over the problems of the survival game . Because most animals live in ever changing environments from one generation to the next , it is not surprising to find that very few species indeed depend wholly upon genetic learning .</p>
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