写作：GRE作文ARGUMENT126篇真题八七
<p> ８７、<span word="Humans">Humans</span> <span word="arrived">arrived</span> <span word="in">in</span> <span word="the">the</span> <span word="Kaliko">Kaliko</span> <span word="Islands">Islands</span> <span word="about">about</span> 7,000 <span word="years">years</span> <span word="ago">ago</span>, <span word="and">and</span> <span word="within">within</span> 3,000 <span word="years">years</span> <span word="most">most</span> <span word="of">of</span> <span word="the">the</span> <span word="large">large</span> <span word="mammal">mammal</span> <span word="species">species</span> <span word="that">that</span> <span word="had">had</span> <span word="lived">lived</span> <span word="in">in</span> <span word="the">the</span> <span word="forests">forests</span> <span word="of">of</span> <span word="the">the</span> <span word="Kaliko">Kaliko</span> <span word="Islands">Islands</span> <span word="had">had</span> <span word="become">become</span> <span word="extinct">extinct</span>. <span word="Yet">Yet</span> <span word="humans">humans</span> <span word="cannot">cannot</span> <span word="have">have</span> <span word="been">been</span> <span word="a">a</span> <span word="factor">factor</span> <span word="in">in</span> <span word="the">the</span> <span word="species">species</span> <span word="extinctions">extinctions</span>, <span word="because">because</span> <span word="there">there</span> <span word="is">is</span> <span word="no">no</span> <span word="evidence">evidence</span> <span word="that">that</span> <span word="the">the</span> <span word="humans">humans</span> <span word="had">had</span> <span word="any">any</span> <span word="significant">significant</span> <span word="contact">contact</span> <span word="with">with</span> <span word="the">the</span> <span word="mammals">mammals</span>. <span word="Further">Further</span>, <span word="archaeologists">archaeologists</span> <span word="have">have</span> <span word="discovered">discovered</span> <span word="numerous">numerous</span> <span word="sites">sites</span> <span word="where">where</span> <span word="the">the</span> <span word="bones">bones</span> <span word="of">of</span> <span word="fish">fish</span> <span word="had">had</span> <span word="been">been</span> <span word="discarded">discarded</span>, <span word="but">but</span> <span word="they">they</span> <span word="found">found</span> <span word="no">no</span> <span word="such">such</span> <span word="areas">areas</span> <span word="containing">containing</span> <span word="the">the</span> <span word="bones">bones</span> <span word="of">of</span> <span word="large">large</span> <span word="mammals">mammals</span>, <span word="so">so</span> <span word="the">the</span> <span word="humans">humans</span> <span word="cannot">cannot</span> <span word="have">have</span> <span word="hunted">hunted</span> <span word="the">the</span> <span word="mammals">mammals</span>. <span word="Therefore">Therefore</span>, <span word="some">some</span> <span word="climate">climate</span> <span word="change">change</span> <span word="or">or</span> <span word="other">other</span> <span word="environmental">environmental</span> <span word="factor">factor</span> <span word="must">must</span> <span word="have">have</span> <span word="caused">caused</span> <span word="the">the</span> <span word="species">species</span> <span word="extinctions">extinctions</span>.</p><p> </p>
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