2015奶奶考研英语作文素材精选 十四
<p> 2015考研英语作文素材精选</p><p> 49 <span word="Sleep">Sleep</span></p><p> <span word="Sleet">Sleet</span> <span word="is">is</span> <span word="part">part</span> <span word="of">of</span> <span word="a">a</span> <span word="persons">persons</span> <span word="daily">daily</span> <span word="activity">activity</span> <span word="cycle">cycle</span>. <span word="There">There</span> <span word="are">are</span> <span word="several">several</span> <span word="different">different</span> <span word="stages">stages</span> <span word="of">of</span> <span word="sleep">sleep</span>, <span word="and">and</span> <span word="they">they</span> <span word="too">too</span> <span word="occur">occur</span> <span word="in">in</span> <span word="cycles">cycles</span>. <span word="If">If</span> <span word="you">you</span> <span word="are">are</span> <span word="an">an</span> <span word="average">average</span> <span word="sleeper">sleeper</span>, <span word="your">your</span> <span word="sleep">sleep</span> <span word="cycle">cycle</span> <span word="is">is</span> <span word="as">as</span> <span word="follows">follows</span>. <span word="When">When</span> <span word="you">you</span> <span word="fist">fist</span> <span word="drift">drift</span> <span word="off">off</span> <span word="into">into</span> <span word="slumber">slumber</span>, <span word="your">your</span> <span word="eyes">eyes</span> <span word="will">will</span> <span word="roll">roll</span> <span word="about">about</span> <span word="a">a</span> <span word="bit">bit</span>, <span word="you">you</span> <span word="temperature">temperature</span> <span word="will">will</span> <span word="drop">drop</span> <span word="slightly">slightly</span>, <span word="your">your</span> <span word="muscles">muscles</span> <span word="will">will</span> <span word="relax">relax</span>, <span word="and">and</span> <span word="your">your</span> <span word="breathing">breathing</span> <span word="well">well</span> <span word="slow">slow</span> <span word="and">and</span> <span word="become">become</span> <span word="quite">quite</span> <span word="regular">regular</span>. <span word="Your">Your</span> <span word="brain">brain</span> <span word="waves">waves</span> <span word="slow">slow</span> <span word="and">and</span> <span word="become">become</span> <span word="quite">quite</span> <span word="regular">regular</span>. <span word="Your">Your</span> <span word="brain">brain</span> <span word="waves">waves</span> <span word="slow">slow</span> <span word="down">down</span> <span word="a">a</span> <span word="bit">bit</span> <span word="too">too</span>, <span word="with">with</span> <span word="the">the</span> <span word="alpha">alpha</span> <span word="rhythm">rhythm</span> <span word="of">of</span> <span word="rather">rather</span> <span word="fast">fast</span> <span word="waves">waves</span> 1 <span word="sleep">sleep</span>. <span word="For">For</span> <span word="the">the</span> <span word="next">next</span> <span word="half">half</span> <span word="hour">hour</span> <span word="or">or</span> <span word="so">so</span>, <span word="as">as</span> <span word="you">you</span> <span word="relax">relax</span> <span word="more">more</span> <span word="and">and</span> <span word="more">more</span>, <span word="you">you</span> <span word="will">will</span> <span word="drift">drift</span> <span word="down">down</span> <span word="through">through</span> <span word="stage">stage</span> 2 <span word="and">and</span> <span word="stage">stage</span> 3 <span word="sleep">sleep</span>. <span word="The">The</span> <span word="lower">lower</span> <span word="your">your</span> <span word="stage">stage</span> <span word="of">of</span> <span word="sleep">sleep</span>. <span word="slower">slower</span> <span word="your">your</span> <span word="brain">brain</span> <span word="waves">waves</span> <span word="will">will</span> <span word="be">be</span>. <span word="Then">Then</span> <span word="about">about</span> 40<span word="to">to</span> 69 <span word="minutes">minutes</span> <span word="after">after</span> <span word="you">you</span> <span word="lose">lose</span> <span word="consciousness">consciousness</span> <span word="you">you</span> <span word="will">will</span> <span word="have">have</span> <span word="reached">reached</span> <span word="the">the</span> <span word="deepest">deepest</span> <span word="sleep">sleep</span> <span word="of">of</span> <span word="all">all</span>. <span word="Your">Your</span> <span word="brain">brain</span> <span word="will">will</span> <span word="show">show</span> <span word="the">the</span> <span word="large">large</span> <span word="slow">slow</span> <span word="waves">waves</span> <span word="that">that</span> <span word="are">are</span> <span word="known">known</span> <span word="as">as</span> <span word="the">the</span> <span word="delta">delta</span> <span word="rhythm">rhythm</span>. <span word="This">This</span> <span word="is">is</span> <span word="stage">stage</span> 4 <span word="sleep">sleep</span>.</p><p> <span word="You">You</span> <span word="do">do</span> <span word="not">not</span> <span word="remain">remain</span> <span word="at">at</span> <span word="this">this</span> <span word="deep">deep</span> <span word="fourth">fourth</span> <span word="stage">stage</span> <span word="all">all</span> <span word="night">night</span> <span word="long">long</span>, <span word="but">but</span> <span word="instead">instead</span> <span word="about">about</span> 80 <span word="minutes">minutes</span> <span word="after">after</span> <span word="you">you</span> <span word="fall">fall</span> <span word="into">into</span> <span word="slumber">slumber</span>, <span word="your">your</span> <span word="brain">brain</span> <span word="activity">activity</span> <span word="level">level</span> <span word="will">will</span> <span word="increase">increase</span> <span word="again">again</span> <span word="slightly">slightly</span>. <span word="The">The</span> <span word="delta">delta</span> <span word="rhythm">rhythm</span> <span word="will">will</span> <span word="disappear">disappear</span>, <span word="to">to</span> <span word="be">be</span> <span word="replaced">replaced</span> <span word="by">by</span> <span word="the">the</span> <span word="activity">activity</span> <span word="pattern">pattern</span> <span word="of">of</span> <span word="brain">brain</span> <span word="waves">waves</span>. <span word="Your">Your</span> <span word="eyes">eyes</span> <span word="will">will</span> <span word="begin">begin</span> <span word="to">to</span> <span word="dart">dart</span> <span word="around">around</span> <span word="under">under</span> <span word="your">your</span> <span word="closed">closed</span> <span word="eyelids">eyelids</span> <span word="as">as</span> <span word="if">if</span> <span word="you">you</span> <span word="were">were</span> <span word="looking">looking</span> <span word="at">at</span> <span word="something">something</span> <span word="occurring">occurring</span> <span word="in">in</span> <span word="front">front</span> <span word="of">of</span> <span word="you">you</span>. <span word="This">This</span> <span word="period">period</span> <span word="of">of</span> <span word="rapid">rapid</span> <span word="eye">eye</span> <span word="movement">movement</span> <span word="lasts">lasts</span> <span word="for">for</span> <span word="some">some</span> 8 <span word="to">to</span> 15 <span word="minutes">minutes</span> <span word="and">and</span> <span word="is">is</span> <span word="called">called</span> <span word="REM">REM</span> <span word="sleep">sleep</span>. <span word="It">It</span> <span word="is">is</span> <span word="during">during</span> <span word="REM">REM</span> <span word="sleep">sleep</span> <span word="period">period</span>, <span word="your">your</span> <span word="body">body</span> <span word="will">will</span> <span word="soon">soon</span> <span word="relax">relax</span> <span word="again">again</span>, <span word="your">your</span> <span word="breathing">breathing</span> <span word="will">will</span> <span word="slip">slip</span> <span word="gently">gently</span> <span word="back">back</span> <span word="from">from</span> <span word="stage">stage</span> 1 <span word="to">to</span> <span word="stage">stage</span> 4 <span word="sleep">sleep</span>----<span word="only">only</span> <span word="to">to</span> <span word="rise">rise</span> <span word="once">once</span> <span word="again">again</span> <span word="to">to</span> <span word="the">the</span> <span word="surface">surface</span> <span word="of">of</span> <span word="near">near</span> <span word="consciousness">consciousness</span> <span word="some">some</span> 80 <span word="minutes">minutes</span> <span word="later">later</span>.</p>
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