2017届高考英语二轮阅读理解训练：（21）
<p> 2017届高考英语二轮专题训练：阅读理解（21）</p><p> <span word="A">A</span></p><p> <span word="Butterfly">Butterfly</span> <span word="gardens">gardens</span> <span word="can">can</span> <span word="be">be</span> <span word="grown">grown</span> <span word="throughout">throughout</span> <span word="the">the</span> <span word="United">United</span> <span word="States">States</span>.<span word="There">There</span> <span word="is">is</span> <span word="a">a</span> <span word="wide">wide</span> <span word="variety">variety</span> <span word="of">of</span> <span word="both">both</span> <span word="butterfly">butterfly</span><span word="attracting">attracting</span> (<span word="nectar">nectar</span>) <span word="plants">plants</span> <span word="and">and</span> <span word="host">host</span> <span word="plants">plants</span> <span word="covering">covering</span> <span word="climate">climate</span> <span word="zones">zones</span> <span word="throughout">throughout</span> <span word="the">the</span> <span word="country">country</span>.<span word="Butterfly">Butterfly</span> <span word="gardens">gardens</span> <span word="can">can</span> <span word="range">range</span></p><p> <span word="in">in</span> <span word="size">size</span> <span word="from">from</span> <span word="a">a</span> <span word="few">few</span> <span word="containers">containers</span> <span word="placed">placed</span> <span word="in">in</span> <span word="a">a</span> <span word="sunny">sunny</span> <span word="spot">spot</span> <span word="to">to</span> <span word="several">several</span> <span word="acres">acres</span>.</p><p> <span word="Nectar">Nectar</span><span word="producing">producing</span> (产蜜的) <span word="plants">plants</span> <span word="will">will</span> <span word="attract">attract</span> <span word="butterflies">butterflies</span> <span word="to">to</span> <span word="your">your</span> <span word="garden">garden</span>.<span word="In">In</span> <span word="order">order</span> <span word="to">to</span> <span word="support">support</span> <span word="a">a</span> <span word="full">full</span> <span word="butterfly">butterfly</span> <span word="life">life</span> <span word="cycle">cycle</span>，<span word="host">host</span> <span word="plants">plants</span> (<span word="for">for</span> <span word="laying">laying</span> <span word="eggs">eggs</span> <span word="and">and</span> <span word="used">used</span> <span word="as">as</span> <span word="a">a</span> <span word="caterpillar">caterpillar</span> <span word="food">food</span> <span word="source">source</span>) <span word="must">must</span> <span word="also">also</span> <span word="be">be</span> <span word="present">present</span>.</p><p> <span word="Throughout">Throughout</span> <span word="the">the</span> <span word="country">country</span>，<span word="the">the</span> <span word="general">general</span> <span word="requirements">requirements</span></p><p> <span word="for">for</span> <span word="butterfly">butterfly</span> <span word="gardening">gardening</span> <span word="are">are</span> <span word="the">the</span> <span word="same">same</span>：<span word="full">full</span> <span word="sun">sun</span>，<span word="nectar">nectar</span> <span word="source">source</span> <span word="plants">plants</span>，<span word="larval">larval</span> (幼虫的)</p><p> <span word="host">host</span> <span word="plants">plants</span>，<span word="a">a</span> <span word="pesticide">pesticide</span><span word="free">free</span> <span word="environment">environment</span>，<span word="and">and</span> <span word="knowledge">knowledge</span> <span word="of">of</span> <span word="the">the</span> <span word="local">local</span> <span word="butterfly">butterfly</span></p><p> <span word="species">species</span>.<span word="Many">Many</span> <span word="butterfly">butterfly</span><span word="attracting">attracting</span> <span word="plants">plants</span> <span word="are">are</span> <span word="natives">natives</span> <span word="and">and</span> <span word="require">require</span> <span word="little">little</span> <span word="attention">attention</span>，<span word="as">as</span> <span word="they">they</span> <span word="are">are</span> <span word="naturally">naturally</span> <span word="adapted">adapted</span> <span word="to">to</span> <span word="the">the</span> <span word="region">region</span> <span word="in">in</span> <span word="which">which</span> <span word="they">they</span> <span word="live">live</span>.</p><p> <span word="Butterfly">Butterfly</span> <span word="gardens">gardens</span> <span word="are">are</span> <span word="best">best</span> <span word="planted">planted</span> <span word="in">in</span> <span word="spring">spring</span> <span word="with">with</span> <span word="younger">younger</span> <span word="plants">plants</span> <span word="or">or</span> <span word="in">in</span> <span word="fall">fall</span> <span word="with">with</span> <span word="mature">mature</span> <span word="plants">plants</span> <span word="that">that</span> <span word="will">will</span> <span word="become">become</span> <span word="dormant">dormant</span> <span word="quickly">quickly</span> <span word="and">and</span> <span word="re">re</span><span word="emerge">emerge</span> <span word="in">in</span></p><p> <span word="spring">spring</span>.<span word="It">It</span> <span word="is">is</span> <span word="best">best</span> <span word="not">not</span> <span word="to">to</span> <span word="plant">plant</span> <span word="in">in</span> <span word="the">the</span> <span word="heat">heat</span> <span word="of">of</span> <span word="summer">summer</span> <span word="or">or</span> <span word="the">the</span> <span word="cold">cold</span> <span word="of">of</span> <span word="winter">winter</span>.</p><p> <span word="One">One</span> <span word="of">of</span> <span word="the">the</span> <span word="most">most</span> <span word="common">common</span> <span word="mistakes">mistakes</span> <span word="in">in</span> <span word="butterfly">butterfly</span> <span word="gardening">gardening</span> <span word="is">is</span> <span word="planting">planting</span> <span word="only">only</span> <span word="one">one</span> <span word="nectar">nectar</span> <span word="source">source</span>.<span word="Adult">Adult</span> <span word="butterflies">butterflies</span> <span word="have">have</span> <span word="a">a</span> <span word="very">very</span> <span word="short">short</span> <span word="lifespan">lifespan</span>.<span word="Planting">Planting</span> <span word="a">a</span> <span word="variety">variety</span> <span word="of">of</span> <span word="nectar">nectar</span> <span word="sources">sources</span> <span word="will">will</span> <span word="encourage">encourage</span> <span word="more">more</span> <span word="butterflies">butterflies</span> <span word="to">to</span> <span word="visit">visit</span> <span word="the">the</span> <span word="garden">garden</span>.<span word="Planting">Planting</span> <span word="an">an</span> <span word="adequate">adequate</span> <span word="supply">supply</span> <span word="of">of</span> <span word="host">host</span> <span word="plants">plants</span> <span word="gives">gives</span> <span word="butterflies">butterflies</span> <span word="a">a</span> <span word="place">place</span> <span word="to">to</span> <span word="lay">lay</span> <span word="their">their</span> <span word="eggs">eggs</span>，<span word="which">which</span> <span word="will">will</span> <span word="successfully">successfully</span> <span word="hatch">hatch</span> (孵化) <span word="and">and</span> <span word="result">result</span> <span word="in">in</span> <span word="butterflies">butterflies</span> <span word="that">that</span> <span word="will">will</span> <span word="continue">continue</span> <span word="to">to</span> <span word="visit">visit</span> <span word="the">the</span> <span word="garden">garden</span>.</p>
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