六级冲刺练习：阅读（86）
<p> 13 <span word="by">by</span> <span word="frost">frost</span>, <span word="storms">storms</span>, <span word="or">or</span> <span word="droughts">droughts</span>. <span word="Furthermore">Furthermore</span>, <span word="the">the</span> </p><p> <span word="development">development</span> <span word="of">of</span> <span word="agricultural">agricultural</span> <span word="machinery">machinery</span> <span word="made">made</span> <span word="it">it</span> <span word="possible">possible</span> <span word="for">for</span> <span word="fewer">fewer</span> <span word="people">people</span> <span word="to">to</span> <span word="do">do</span> <span word="the">the</span> <span word="same">same</span> 14 <span word="of">of</span> <span word="work">work</span>.</p><p> <span word="Thus">Thus</span>, <span word="at">at</span> <span word="the">the</span> <span word="same">same</span> <span word="time">time</span> <span word="when">when</span> <span word="the">the</span> <span word="industrial">industrial</span> <span word="revolution">revolution</span> <span word="made">made</span> <span word="it">it</span> <span word="possible">possible</span> <span word="to">to</span> <span word="produce">produce</span> <span word="goods">goods</span> <span word="more">more</span> 15 <span word="and">and</span> <span word="more">more</span> <span word="quickly">quickly</span> <span word="in">in</span> <span word="factories">factories</span>, <span word="agricultural">agricultural</span> <span word="revolution">revolution</span> <span word="also">also</span> <span word="took">took</span> <span word="place">place</span>. <span word="Instead">Instead</span> <span word="of">of</span> <span word="leaving">leaving</span> <span word="fields">fields</span> <span word="empty">empty</span> <span word="every">every</span> <span word="third">third</span> <span word="year">year</span>, <span word="farmers">farmers</span> <span word="began">began</span> <span word="to">to</span> <span word="plant">plant</span> <span word="clover">clover</span> <span word="or">or</span> <span word="some">some</span> <span word="other">other</span> <span word="crop">crop</span> <span word="that">that</span> <span word="would">would</span> 16 <span word="the">the</span> <span word="soil">soil</span>. <span word="Instead">Instead</span> <span word="of">of</span> <span word="using">using</span> <span word="only">only</span> <span word="animal">animal</span> <span word="fertilizer">fertilizer</span>, <span word="farmers">farmers</span> <span word="began">began</span> <span word="to">to</span> <span word="use">use</span> <span word="chemical">chemical</span> <span word="fertilizers">fertilizers</span> <span word="to">to</span> <span word="keep">keep</span> <span word="the">the</span> <span word="soil">soil</span></p><p> <span word="rich">rich</span>. <span word="These">These</span> <span word="methods">methods</span> <span word="have">have</span> <span word="enabled">enabled</span> <span word="French">French</span> <span word="farmers">farmers</span>, <span word="for">for</span> <span word="example">example</span>, <span word="to">to</span> <span word="get">get</span> <span word="five">five</span> <span word="times">times</span> <span word="as">as</span> <span word="much">much</span> <span word="wheat">wheat</span> <span word="as">as</span> <span word="was">was</span> 17 <span word="from">from</span> <span word="the">the</span> <span word="same">same</span> <span word="land">land</span> <span word="two">two</span> <span word="centuries">centuries</span> <span word="ago">ago</span>.</p><p> <span word="In">In</span> <span word="many">many</span> <span word="countries">countries</span> <span word="farmers">farmers</span> <span word="find">find</span> <span word="it">it</span> <span word="more">more</span> 18 <span word="to">to</span> <span word="raise">raise</span> <span word="only">only</span> <span word="one">one</span> <span word="crop">crop</span> <span word="or">or</span> <span word="one">one</span> <span word="kind">kind</span> <span word="of">of</span> <span word="animal">animal</span>. <span word="They">They</span> <span word="choose">choose</span> <span word="the">the</span> <span word="kind">kind</span> <span word="that">that</span> <span word="gives">gives</span> <span word="the">the</span> <span word="best">best</span> <span word="results">results</span>. <span word="Then">Then</span> <span word="they">they</span> <span word="sell">sell</span> <span word="all">all</span> <span word="that">that</span> <span word="they">they</span> <span word="produce">produce</span>, <span word="instead">instead</span> <span word="of">of</span> <span word="trying">trying</span> <span word="to">to</span> <span word="grow">grow</span> <span word="a">a</span> <span word="little">little</span> <span word="of">of</span> <span word="everything">everything</span> <span word="and">and</span> <span word="consume">consume</span> <span word="what">what</span> <span word="they">they</span> <span word="grow">grow</span>. <span word="This">This</span> <span word="is">is</span> <span word="a">a</span> <span word="more">more</span> <span word="feasible">feasible</span> <span word="type">type</span> <span word="of">of</span> 19 <span word="because">because</span> <span word="modern">modern</span> <span word="methods">methods</span> <span word="and">and</span> <span word="machinery">machinery</span> <span word="are">are</span> <span word="adapted">adapted</span> <span word="to">to</span> <span word="specific">specific</span> <span word="animals">animals</span> <span word="and">and</span> <span word="specific">specific</span> <span word="crops">crops</span>. <span word="Therefore">Therefore</span>, <span word="it">it</span> <span word="would">would</span> <span word="be">be</span> <span word="too">too</span> <span word="expensive">expensive</span> <span word="to">to</span> <span word="do">do</span> <span word="all">all</span> <span word="the">the</span> <span word="work">work</span> <span word="by">by</span> <span word="hand">hand</span>, <span word="or">or</span> <span word="to">to</span> <span word="buy">buy</span> <span word="the">the</span> 20 <span word="needed">needed</span> <span word="for">for</span> <span word="several">several</span> <span word="different">different</span> <span word="kinds">kinds</span> <span word="of">of</span> <span word="farming">farming</span>.</p><p> <span word="A">A</span>. <span word="salary">salary</span> <span word="E">E</span>. <span word="deserted">deserted</span> <span word="I">I</span>. <span word="equivalent">equivalent</span> <span word="M">M</span>. <span word="destroyed">destroyed</span></p><p> <span word="B">B</span>. <span word="freely">freely</span> <span word="F">F</span>. <span word="operation">operation</span> <span word="J">J</span>. <span word="enrich">enrich</span> <span word="N">N</span>. <span word="certain">certain</span></p><p> <span word="C">C</span>. <span word="profitable">profitable</span> <span word="G">G</span>.<span word="amount">amount</span> <span word="K">K</span>. <span word="fruitful">fruitful</span> <span word="O">O</span>. <span word="cheaply">cheaply</span></p><p> <span word="D">D</span>. <span word="obtained">obtained</span> <span word="H">H</span>. <span word="payment">payment</span> <span word="L">L</span>. <span word="equipment">equipment</span></p>
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