2017届高考英语（重庆专用）二轮精练：必修3 unit4 period 1
<p> <span word="Unit">Unit</span> 4 <span word="Astronomy">Astronomy</span>：<span word="the">the</span> <span word="science">science</span> <span word="of">of</span> <span word="the">the</span> <span word="stars">stars</span> <span word="Section">Section</span> Ⅰ<span word="Warming">Warming</span> <span word="Up">Up</span> & <span word="Reading">Reading</span> 课时精练（人教版必修3，重庆专用）</p><p> Ⅰ.课文缩写</p><p> <span word="The">The</span> <span word="earth">earth</span> <span word="was">was</span> <span word="just">just</span> <span word="a">a</span> <span word="cloud">cloud</span> <span word="of">of</span> __1__ <span word="after">after</span> <span word="the">the</span> “<span word="Big">Big</span> <span word="Bang">Bang</span>”．<span word="The">The</span> <span word="earth">earth</span> __2__ <span word="loudly">loudly</span> <span word="with">with</span> <span word="fire">fire</span> <span word="and">and</span> <span word="rock">rock</span>.<span word="They">They</span> <span word="were">were</span> <span word="in">in</span> __3__ <span word="to">to</span> <span word="produce">produce</span> <span word="many">many</span> <span word="things">things</span>, <span word="which">which</span> <span word="were">were</span> <span word="to">to</span> <span word="make">make</span> <span word="the">the</span> <span word="earth">earth</span>'<span word="s">s</span> <span word="atmosphere">atmosphere</span>.<span word="As">As</span> <span word="the">the</span> <span word="earth">earth</span> <span word="cooled">cooled</span> <span word="down">down</span>，<span word="water">water</span> <span word="began">began</span> <span word="to">to</span> <span word="appear">appear</span> <span word="on">on</span> <span word="its">its</span> <span word="surface">surface</span>.<span word="It">It</span> <span word="allowed">allowed</span> <span word="the">the</span> <span word="earth">earth</span> <span word="to">to</span> <span word="dissolve">dissolve</span> __4__ <span word="gases">gases</span>.<span word="Then">Then</span> <span word="life">life</span> <span word="began">began</span> <span word="to">to</span> <span word="develop">develop</span>.</p><p> <span word="The">The</span> <span word="first">first</span> <span word="small">small</span> <span word="plants">plants</span> __5__ <span word="and">and</span> <span word="filled">filled</span> <span word="the">the</span> <span word="oceans">oceans</span> <span word="and">and</span> <span word="seas">seas</span> <span word="with">with</span> <span word="oxygen">oxygen</span>.<span word="This">This</span> <span word="encouraged">encouraged</span> <span word="the">the</span> __6__ <span word="of">of</span> <span word="early">early</span> <span word="shellfish">shellfish</span> <span word="and">and</span> <span word="fish">fish</span>.<span word="Land">Land</span> <span word="animals">animals</span> <span word="such">such</span> <span word="as">as</span> <span word="insects">insects</span>，<span word="reptiles">reptiles</span> <span word="and">and</span> <span word="dinosaurs">dinosaurs</span> <span word="and">and</span> <span word="so">so</span> <span word="on">on</span> <span word="appeared">appeared</span> <span word="after">after</span> <span word="green">green</span> <span word="plants">plants</span> <span word="appeared">appeared</span>.<span word="Small">Small</span> <span word="clever">clever</span> <span word="animals">animals</span> __7__ <span word="all">all</span> <span word="over">over</span> <span word="the">the</span> <span word="earth">earth</span>.<span word="They">They</span> <span word="are">are</span> <span word="putting">putting</span> <span word="too">too</span> __8__ <span word="carbon">carbon</span> <span word="dioxide">dioxide</span> <span word="into">into</span> <span word="the">the</span> <span word="atmosphere">atmosphere</span>, <span word="which">which</span> __9__ <span word="heat">heat</span> <span word="from">from</span> <span word="the">the</span> <span word="earth">earth</span> <span word="into">into</span> <span word="space">space</span>.<span word="Whether">Whether</span> <span word="life">life</span> <span word="will">will</span> <span word="continue">continue</span> <span word="on">on</span> <span word="the">the</span> <span word="earth">earth</span> <span word="for">for</span> <span word="millions">millions</span> <span word="of">of</span> <span word="years">years</span> <span word="to">to</span> <span word="come">come</span> <span word="will">will</span> __10__ <span word="on">on</span> <span word="whether">whether</span> <span word="this">this</span> <span word="problem">problem</span> <span word="can">can</span> <span word="be">be</span> <span word="solved">solved</span>.</p><p> 答案 1.<span word="dust">dust</span> 2.<span word="exploded">exploded</span> 3.<span word="time">time</span> 4.<span word="harmful">harmful</span> 5.<span word="multiplied">multiplied</span> 6.<span word="development">development</span> 7.<span word="spread">spread</span> 8.<span word="much">much</span> 9.<span word="prevents">prevents</span> 10.<span word="depend">depend</span></p><p> Ⅱ.单词拼写</p><p> 1．<span word="He">He</span> <span word="was">was</span> <span word="interested">interested</span> <span word="in">in</span> ________ (天文学)<span word="and">and</span> <span word="always">always</span> <span word="stayed">stayed</span> <span word="up">up</span> <span word="at">at</span> <span word="night">night</span> <span word="to">to</span> <span word="watch">watch</span> <span word="the">the</span> <span word="stars">stars</span>.</p><p> 2．<span word="Computer">Computer</span> <span word="hackers">hackers</span> <span word="have">have</span> <span word="broken">broken</span> <span word="down">down</span> <span word="security">security</span> ________(系统), <span word="raising">raising</span> <span word="questions">questions</span> <span word="about">about</span> <span word="the">the</span> <span word="safety">safety</span> <span word="of">of</span> <span word="information">information</span>.</p><p> 3．<span word="Too">Too</span> <span word="much">much</span> <span word="sugar">sugar</span> <span word="can">can</span> <span word="be">be</span> ________(伤害)<span word="to">to</span> <span word="children">children</span>'<span word="s">s</span> <span word="teeth">teeth</span>.</p>
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