雅思写作参考范文：限制飞机？
<p> 飞机限制问题</p><p> <span word="Automobiles">Automobiles</span> <span word="produce">produce</span> <span word="less">less</span> <span word="pollution">pollution</span> <span word="than">than</span> <span word="do">do</span> <span word="airplanes">airplanes</span>. <span word="Automobiles">Automobiles</span> <span word="also">also</span> <span word="consume">consume</span> <span word="less">less</span> <span word="fossil">fossil</span> <span word="fuel">fuel</span>. <span word="Therefore">Therefore</span> <span word="it">it</span> <span word="is">is</span> <span word="necessary">necessary</span> <span word="to">to</span> <span word="restrict">restrict</span> <span word="some">some</span> <span word="flights">flights</span>. <span word="Do">Do</span> <span word="you">you</span> <span word="agree">agree</span> <span word="or">or</span> <span word="disagree">disagree</span> <span word="with">with</span> <span word="this">this</span> <span word="opinion">opinion</span>?</p><p> <span word="The">The</span> <span word="argument">argument</span> <span word="that">that</span> <span word="the">the</span> <span word="flights">flights</span> <span word="should">should</span> <span word="be">be</span> <span word="restricted">restricted</span> <span word="is">is</span> <span word="invalid">invalid</span>. <span word="Clearly">Clearly</span>, <span word="it">it</span> <span word="is">is</span> <span word="unconvincing">unconvincing</span> <span word="to">to</span> <span word="compare">compare</span> <span word="the">the</span> <span word="volume">volume</span> <span word="of">of</span> <span word="pollutants">pollutants</span> <span word="an">an</span> <span word="airplane">airplane</span> <span word="produces">produces</span> <span word="with">with</span> <span word="that">that</span> <span word="generated">generated</span> <span word="by">by</span> <span word="an">an</span> <span word="automobile">automobile</span>, <span word="because">because</span> <span word="an">an</span> <span word="airplane">airplane</span> <span word="is">is</span> <span word="shared">shared</span> <span word="by">by</span> <span word="many">many</span> <span word="passengers">passengers</span> <span word="while">while</span> <span word="an">an</span> <span word="automobile">automobile</span> <span word="is">is</span> <span word="usually">usually</span> <span word="for">for</span> <span word="one">one</span> <span word="or">or</span>, <span word="at">at</span> <span word="the">the</span> <span word="best">best</span>, <span word="several">several</span> <span word="passengers">passengers</span>.</p><p> <span word="Suppose">Suppose</span> <span word="a">a</span> <span word="visitor">visitor</span> <span word="drives">drives</span> 1,000 <span word="miles">miles</span>, <span word="burning">burning</span> 100 <span word="liter">liter</span> <span word="gasoline">gasoline</span> <span word="and">and</span> <span word="emitting">emitting</span> 10 <span word="cubic">cubic</span> <span word="meter">meter</span> <span word="carbon">carbon</span> <span word="dioxide">dioxide</span>, <span word="this">this</span> <span word="very">very</span> <span word="passenger">passenger</span> <span word="is">is</span> <span word="totally">totally</span> <span word="responsible">responsible</span> <span word="for">for</span> <span word="such">such</span> <span word="an">an</span> <span word="environment">environment</span> <span word="problem">problem</span>. <span word="But">But</span> <span word="to">to</span> <span word="what">what</span> <span word="extent">extent</span> <span word="should">should</span> <span word="another">another</span> <span word="passenger">passenger</span>, <span word="who">who</span> <span word="travels">travels</span> <span word="the">the</span> <span word="same">same</span> <span word="distance">distance</span> <span word="by">by</span> <span word="air">air</span>, <span word="take">take</span> <span word="environment">environment</span> <span word="responsibility">responsibility</span>? <span word="If">If</span> <span word="the">the</span> <span word="airplane">airplane</span> <span word="consumes">consumes</span> 10,000 <span word="liter">liter</span> <span word="gasoline">gasoline</span> <span word="and">and</span> <span word="produces">produces</span> 1000 <span word="cubic">cubic</span> <span word="meter">meter</span> <span word="carbon">carbon</span> <span word="dioxide">dioxide</span> <span word="and">and</span> <span word="if">if</span> <span word="altogether">altogether</span> 300 <span word="passengers">passengers</span> <span word="share">share</span> <span word="the">the</span> <span word="flight">flight</span>, <span word="then">then</span> <span word="traveling">traveling</span> <span word="by">by</span> <span word="air">air</span> <span word="causes">causes</span> <span word="less">less</span> <span word="environmental">environmental</span> <span word="damage">damage</span>.</p><p> <span word="Another">Another</span> <span word="thing">thing</span> <span word="must">must</span> <span word="also">also</span> <span word="be">be</span> <span word="in">in</span> <span word="the">the</span> <span word="list">list</span> <span word="of">of</span> <span word="consideration">consideration</span>: <span word="the">the</span> <span word="time">time</span>. <span word="Traveling">Traveling</span> <span word="by">by</span> <span word="air">air</span> <span word="saves">saves</span> <span word="time">time</span>. <span word="The">The</span> <span word="point">point</span> <span word="is">is</span> <span word="that">that</span> <span word="even">even</span> <span word="if">if</span> <span word="traveling">traveling</span> <span word="by">by</span> <span word="automobiles">automobiles</span> <span word="consumes">consumes</span> <span word="less">less</span> <span word="energy">energy</span> <span word="and">and</span> <span word="produces">produces</span> <span word="less">less</span> <span word="pollutants">pollutants</span>, <span word="traveling">traveling</span> <span word="by">by</span> <span word="air">air</span> <span word="has">has</span> <span word="a">a</span> <span word="variety">variety</span> <span word="of">of</span> <span word="reasons">reasons</span>. <span word="For">For</span> <span word="instance">instance</span>, <span word="a">a</span> <span word="patient">patient</span> <span word="is">is</span> <span word="transported">transported</span> <span word="by">by</span> <span word="air">air</span> <span word="from">from</span> <span word="where">where</span> <span word="she">she</span> <span word="is">is</span> <span word="injured">injured</span> <span word="to">to</span> <span word="the">the</span> <span word="hospital">hospital</span>.</p><p> <span word="The">The</span> <span word="opponents">opponents</span> <span word="might">might</span> <span word="argue">argue</span> <span word="that">that</span> <span word="this">this</span> <span word="is">is</span> <span word="not">not</span> <span word="the">the</span> <span word="unnecessary">unnecessary</span> <span word="flights">flights</span>. <span word="Nevertheless">Nevertheless</span> <span word="it">it</span> <span word="is">is</span> <span word="ambiguous">ambiguous</span> <span word="and">and</span> <span word="vague">vague</span> <span word="to">to</span> <span word="use">use</span> <span word="such">such</span> <span word="a">a</span> <span word="term">term</span>. <span word="How">How</span> <span word="to">to</span> <span word="define">define</span> <span word="an">an</span> <span word="unnecessary">unnecessary</span> <span word="flight">flight</span>? <span word="Is">Is</span> <span word="there">there</span> <span word="a">a</span> <span word="legal">legal</span> <span word="or">or</span> <span word="generally">generally</span> <span word="accepted">accepted</span> <span word="criterion">criterion</span> <span word="against">against</span> <span word="which">which</span> <span word="the">the</span> <span word="feature">feature</span> <span word="of">of</span> <span word="a">a</span> <span word="flight">flight</span> <span word="can">can</span> <span word="be">be</span> <span word="clearly">clearly</span> <span word="and">and</span> <span word="correctly">correctly</span> <span word="labeled">labeled</span> <span word="as">as</span> <span word="necessary">necessary</span> <span word="or">or</span> <span word="unnecessary">unnecessary</span>? <span word="Nay">Nay</span>.</p>
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