阅读理解：Travel
<p><span word="Most">Most</span> <span word="people">people</span> <span word="usually">usually</span> <span word="traveled">traveled</span> <span word="by">by</span> <span word="ship">ship</span> <span word="and">and</span> <span word="train">train</span> <span word="which">which</span> <span word="are">are</span> <span word="driven">driven</span> <span word="by">by</span> <span word="steam">steam</span> <span word="engine">engine</span>. <span word="It">It</span> <span word="played">played</span> <span word="an">an</span> <span word="important">important</span> <span word="part">part</span> <span word="in">in</span> <span word="many">many</span> <span word="kinds">kinds</span> <span word="of">of</span> <span word="vehicles">vehicles</span> <span word="several">several</span> <span word="scores">scores</span> <span word="of">of</span> <span word="years">years</span> <span word="ago">ago</span>. <span word="Who">Who</span> <span word="invented">invented</span> <span word="steam">steam</span> <span word="engine">engine</span> <span word="and">and</span> <span word="what">what</span> <span word="units">units</span> <span word="could">could</span> <span word="be">be</span> <span word="used">used</span> <span word="to">to</span> <span word="measure">measure</span> <span word="the">the</span> <span word="power">power</span> <span word="of">of</span> <span word="engine">engine</span>?</p><p><span word="The">The</span> <span word="word">word</span> “<span word="horse">horse</span>-<span word="power">power</span>” <span word="was">was</span> <span word="first">first</span> <span word="used">used</span> <span word="two">two</span> <span word="hundred">hundred</span> <span word="years">years</span> <span word="ago">ago</span>. <span word="James">James</span> <span word="Watt">Watt</span> <span word="from">from</span> <span word="a">a</span> <span word="worker">worker</span>‟<span word="s">s</span> <span word="family">family</span> <span word="made">made</span> <span word="the">the</span> <span word="world">world</span> <span word="first">first</span> <span word="widely">widely</span> <span word="used">used</span> <span word="steam">steam</span> <span word="engine">engine</span>. <span word="At">At</span> <span word="first">first</span>, <span word="he">he</span> <span word="couldn">couldn</span>‟<span word="t">t</span> <span word="tell">tell</span> <span word="people">people</span> <span word="how">how</span> <span word="powerful">powerful</span> <span word="it">it</span> <span word="was">was</span>, <span word="because">because</span> <span word="there">there</span> <span word="were">were</span> <span word="no">no</span> <span word="units">units</span> <span word="at">at</span> <span word="that">that</span> <span word="time">time</span>. <span word="Watt">Watt</span> <span word="decided">decided</span> <span word="to">to</span> <span word="find">find</span> <span word="out">out</span> <span word="how">how</span> <span word="much">much</span> <span word="work">work</span> <span word="one">one</span> <span word="strong">strong</span> <span word="horse">horse</span> <span word="could">could</span> <span word="do">do</span> <span word="in">in</span> <span word="one">one</span> <span word="minute">minute</span>. <span word="He">He</span> <span word="named">named</span> <span word="that">that</span> <span word="unit">unit</span> <span word="one">one</span> <span word="horse">horse</span>-<span word="power">power</span>. <span word="In">In</span> <span word="this">this</span> <span word="way">way</span> <span word="he">he</span> <span word="could">could</span> <span word="measure">measure</span> <span word="the">the</span> <span word="work">work</span> <span word="of">of</span> <span word="his">his</span> <span word="steam">steam</span> <span word="engine">engine</span>.</p><p><span word="He">He</span> <span word="discovered">discovered</span> <span word="that">that</span> <span word="a">a</span> <span word="horse">horse</span> <span word="could">could</span> <span word="lift">lift</span> <span word="a">a</span> 3300-<span word="pound">pound</span> <span word="weight">weight</span> 10 <span word="feet">feet</span> <span word="into">into</span> <span word="the">the</span> <span word="air">air</span> <span word="in">in</span> <span word="one">one</span> <span word="minute">minute</span>. <span word="His">His</span> <span word="engine">engine</span> <span word="could">could</span> <span word="lift">lift</span> <span word="a">a</span> 3300-<span word="pound">pound</span> <span word="weight">weight</span> 100 <span word="feet">feet</span> <span word="in">in</span> <span word="one">one</span> <span word="minute">minute</span>. <span word="Because">Because</span> <span word="his">his</span> <span word="engine">engine</span> <span word="did">did</span> <span word="ten">ten</span> <span word="times">times</span> <span word="as">as</span> <span word="much">much</span> <span word="work">work</span> <span word="as">as</span> <span word="the">the</span> <span word="horse">horse</span>, <span word="Watt">Watt</span> <span word="called">called</span> <span word="it">it</span> <span word="a">a</span> <span word="ten">ten</span> <span word="horse">horse</span>-<span word="power">power</span> <span word="engine">engine</span>.</p><p>31. <span word="The">The</span> <span word="main">main</span> <span word="idea">idea</span> <span word="of">of</span> <span word="the">the</span> <span word="passage">passage</span> <span word="is">is</span> __<span word="B">B</span>_.</p><p><span word="A">A</span>. <span word="James">James</span> <span word="Watt">Watt</span> <span word="invented">invented</span> <span word="the">the</span> <span word="steam">steam</span> <span word="engine">engine</span></p><p><span word="B">B</span>. <span word="James">James</span> <span word="Watt">Watt</span> <span word="first">first</span> <span word="used">used</span> <span word="horse">horse</span>-<span word="power">power</span> <span word="as">as</span> <span word="a">a</span> <span word="unit">unit</span> <span word="of">of</span> <span word="measure">measure</span></p><p><span word="C">C</span>. <span word="how">how</span> <span word="much">much</span> <span word="power">power</span> <span word="does">does</span> <span word="a">a</span> <span word="horse">horse</span> <span word="have">have</span></p><p><span word="D">D</span>. <span word="why">why</span> <span word="Watt">Watt</span>‟<span word="s">s</span> <span word="engine">engine</span> <span word="is">is</span> <span word="called">called</span> <span word="a">a</span> <span word="ten">ten</span> <span word="horse">horse</span>-<span word="power">power</span> <span word="engine">engine</span></p><p>32. <span word="The">The</span> <span word="story">story</span> <span word="says">says</span> <span word="that">that</span> <span word="Watt">Watt</span> <span word="made">made</span> <span word="the">the</span> <span word="first">first</span> __<span word="D">D</span>__.</p><p><span word="A">A</span>. <span word="engine">engine</span> <span word="B">B</span>. <span word="horse">horse</span>-<span word="power">power</span> <span word="engine">engine</span> <span word="C">C</span>. <span word="useful">useful</span> <span word="engine">engine</span> <span word="D">D</span>. <span word="widely">widely</span> <span word="used">used</span> <span word="steam">steam</span> <span word="engine">engine</span></p>
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