2016届高考英语一轮复习课时作业：语言朋友（26）(北师大版)
<p> 语言朋友(26)(香水) <span word="come">come</span> <span word="in">in</span> <span word="tiny">tiny</span> <span word="bottles">bottles</span>,</p><p> <span word="perfect">perfect</span> <span word="a">a</span> <span word="particular">particular</span> <span word="smell">smell</span>, <span word="perfume">perfume</span><span word="makers">makers</span> <span word="often">often</span> <span word="use">use</span> <span word="an">an</span> <span word="ingredient">ingredient</span> <span word="that">that</span> <span word="comes">comes</span> <span word="from">from</span> <span word="sperm">sperm</span> <span word="whales">whales</span>, <span word="called">called</span> <span word="ambergris">ambergris</span>.<span word="But">But</span> <span word="using">using</span> <span word="ambergris">ambergris</span>, <span word="which">which</span> <span word="helps">helps</span> <span word="a">a</span> <span word="perfume">perfume</span> <span word="last">last</span> <span word="longer">longer</span>, <span word="is">is</span> <span word="strongly">strongly</span> <span word="opposed">opposed</span> <span word="by">by</span> <span word="many">many</span> <span word="people">people</span> <span word="who">who</span> <span word="think">think</span> <span word="it">it</span> <span word="is">is</span> <span word="wrong">wrong</span> <span word="to">to</span> <span word="kill">kill</span> <span word="whales">whales</span> <span word="just">just</span> <span word="so">so</span> <span word="we">we</span> <span word="can">can</span> <span word="smell">smell</span> <span word="sweet">sweet</span>.<span word="Joerg">Joerg</span> <span word="Bohlmann">Bohlmann</span> <span word="is">is</span> <span word="neither">neither</span> <span word="a">a</span> <span word="perfumer">perfumer</span> <span word="nor">nor</span> <span word="a">a</span> <span word="whale">whale</span> <span word="expert">expert</span>.<span word="He">He</span>'<span word="s">s</span> <span word="a">a</span> <span word="plant">plant</span> <span word="biologist">biologist</span> <span word="at">at</span> <span word="the">the</span> <span word="University">University</span> <span word="of">of</span> <span word="British">British</span> <span word="Columbia">Columbia</span> <span word="in">in</span> <span word="Canada">Canada</span>.<span word="But">But</span> <span word="his">his</span> <span word="discovery">discovery</span> <span word="of">of</span> <span word="a">a</span> <span word="new">new</span> <span word="plant">plant</span> <span word="gene">gene</span> (基因) <span word="might">might</span> <span word="push">push</span> <span word="whales">whales</span> <span word="out">out</span> <span word="of">of</span> <span word="the">the</span> <span word="perfume">perfume</span> <span word="business">business</span>.</p><p> <span word="The">The</span> <span word="gene">gene</span> <span word="comes">comes</span> <span word="from">from</span> <span word="fir">fir</span> <span word="trees">trees</span>, <span word="found">found</span> <span word="throughout">throughout</span> <span word="North">North</span> <span word="America">America</span> <span word="and">and</span> <span word="commonly">commonly</span> <span word="used">used</span> <span word="as">as</span> <span word="Christmas">Christmas</span> <span word="trees">trees</span>.<span word="The">The</span> <span word="trees">trees</span> <span word="produce">produce</span> <span word="a">a</span> <span word="chemical">chemical</span> <span word="that">that</span> <span word="can">can</span> <span word="be">be</span> <span word="used">used</span> <span word="in">in</span> <span word="perfume">perfume</span> <span word="in">in</span> <span word="place">place</span> <span word="of">of</span> <span word="ambergris">ambergris</span>－<span word="but">but</span> <span word="with">with</span>_<span word="a">a</span>_<span word="catch">catch</span>．<span word="mical">mical</span> <span word="is">is</span> <span word="mixed">mixed</span> <span word="with">with</span> <span word="many">many</span> <span word="others">others</span>.<span word="That">That</span> <span word="makes">makes</span> <span word="separation">separation</span> <span word="a">a</span> <span word="challenge">challenge</span>，” <span word="Bohlmann">Bohlmann</span> <span word="says">says</span>.“<span word="It">It</span>'<span word="s">s</span> <span word="like">like</span> <span word="trying">trying</span> <span word="to">to</span> <span word="isolate">isolate</span> <span word="sugar">sugar</span> <span word="from">from</span> <span word="a">a</span> <span word="biscuit">biscuit</span>.”</p><p> <span word="This">This</span> <span word="is">is</span> <span word="where">where</span> <span word="science">science</span> <span word="becomes">becomes</span> <span word="useful">useful</span>.<span word="When">When</span> <span word="Bohlmann">Bohlmann</span> <span word="learned">learned</span> <span word="that">that</span> <span word="fir">fir</span> <span word="trees">trees</span> <span word="produce">produce</span> <span word="the">the</span> <span word="ambergris">ambergris</span>璴<span word="ike">ike</span> <span word="chemical">chemical</span>, <span word="he">he</span> <span word="decidted">decidted</span> <span word="to">to</span> <span word="use">use</span> <span word="his">his</span> <span word="gene">gene</span> <span word="know">know</span><span word="how">how</span> <span word="to">to</span> <span word="find">find</span> <span word="the">the</span> <span word="instructions">instructions</span> <span word="for">for</span> <span word="how">how</span> <span word="to">to</span> <span word="make">make</span> <span word="the">the</span> <span word="ambergris">ambergris</span><span word="substitute">substitute</span>.</p><p> <span word="Bohlmann">Bohlmann</span> <span word="found">found</span> <span word="that">that</span> <span word="gene">gene</span> <span word="and">and</span> <span word="took">took</span> <span word="it">it</span> <span word="out">out</span> <span word="of">of</span> <span word="the">the</span> <span word="tree">tree</span> <span word="cells">cells</span>.<span word="Then">Then</span> <span word="he">he</span> <span word="did">did</span> <span word="something">something</span> <span word="that">that</span> <span word="might">might</span> <span word="sound">sound</span> <span word="strange">strange</span> <span word="to">to</span> <span word="someone">someone</span> <span word="who">who</span> <span word="doesn">doesn</span>'<span word="t">t</span> <span word="work">work</span> <span word="in">in</span> <span word="genetics">genetics</span>: <span word="Bohlmann">Bohlmann</span> <span word="put">put</span> <span word="the">the</span> <span word="gene">gene</span> <span word="from">from</span> <span word="the">the</span> <span word="tree">tree</span> <span word="into">into</span> <span word="yeast">yeast</span> (酵母) <span word="cells">cells</span>.<span word="t">t</span> <span word="the">the</span> <span word="fir">fir</span> <span word="tree">tree</span> <span word="gene">gene</span> <span word="into">into</span> <span word="the">the</span> <span word="yeast">yeast</span>, <span word="the">the</span> <span word="yeast">yeast</span> <span word="started">started</span> <span word="making">making</span> <span word="the">the</span> <span word="same">same</span> <span word="chemical">chemical</span> <span word="that">that</span> <span word="had">had</span> <span word="been">been</span> <span word="produced">produced</span> <span word="by">by</span> <span word="the">the</span> <span word="tree">tree</span>.</p>
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