小升初英文奥数试题（二）
<p> 1、<span word="Did">Did</span> <span word="you">you</span> <span word="know">know</span>? <span word="In">In</span> <span word="the">the</span> <span word="decimal">decimal</span> <span word="number">number</span> <span word="system">system</span> (<span word="base">base</span> 10) <span word="ten">ten</span> <span word="different">different</span> <span word="digits">digits</span>, 0 <span word="to">to</span> 9, <span word="are">are</span> <span word="used">used</span> <span word="to">to</span> <span word="write">write</span> <span word="all">all</span> <span word="the">the</span> <span word="numbers">numbers</span>. <span word="In">In</span> <span word="the">the</span> <span word="binary">binary</span> <span word="number">number</span> <span word="system">system</span> (<span word="base">base</span> 2) <span word="two">two</span> <span word="different">different</span> <span word="digits">digits</span> <span word="are">are</span> <span word="used">used</span>, <span word="i">i</span>.<span word="e">e</span>. 0 <span word="and">and</span> 1.</p><p> <span word="Which">Which</span> <span word="one">one</span> <span word="of">of</span> <span word="the">the</span> <span word="following">following</span> <span word="numbers">numbers</span> <span word="is">is</span> <span word="not">not</span> <span word="a">a</span> <span word="valid">valid</span> <span word="number">number</span> <span word="in">in</span> <span word="the">the</span></p><p> <span word="octal">octal</span> <span word="number">number</span> <span word="system">system</span> (<span word="base">base</span> 8)?</p><p> <span word="A">A</span>) 128 <span word="B">B</span>) 127 <span word="C">C</span>) 126 <span word="D">D</span>) 125 <span word="E">E</span>) 124</p><p> 2、<span word="The">The</span> <span word="number">number</span> <span word="of">of</span> <span word="diagonals">diagonals</span> <span word="that">that</span> <span word="can">can</span> <span word="be">be</span> <span word="drawn">drawn</span> <span word="in">in</span> <span word="a">a</span> <span word="regular">regular</span> <span word="polygon">polygon</span> <span word="with">with</span></p><p> <span word="twenty">twenty</span> <span word="sides">sides</span> (<span word="icosagon">icosagon</span>) <span word="is">is</span>_____.</p><p> 3、<span word="If">If</span> <span word="a">a</span> <span word="and">and</span> <span word="b">b</span> <span word="are">are</span> <span word="integers">integers</span>, 103=1,1527=3, <span word="and">and</span> <span word="then">then</span> 3796 <span word="is">is</span> <span word="equal">equal</span> <span word="to">to</span>_____.</p><p> 4、<span word="Two">Two</span> <span word="numbers">numbers</span> <span word="are">are</span> <span word="in">in</span> <span word="the">the</span> <span word="ratio">ratio</span> 2 : 3. <span word="When">When</span> 4 <span word="is">is</span> <span word="added">added</span> <span word="to">to</span> <span word="each">each</span> <span word="number">number</span> <span word="the">the</span> <span word="ratio">ratio</span> <span word="changes">changes</span> <span word="to">to</span> 5 : 7.<span word="The">The</span> <span word="sum">sum</span> <span word="of">of</span> <span word="the">the</span> <span word="two">two</span> <span word="original">original</span> <span word="numbers">numbers</span> <span word="is">is</span>____.</p><p> 5、<span word="The">The</span> <span word="greatest">greatest</span> <span word="number">number</span> <span word="of">of</span> <span word="Mondays">Mondays</span> <span word="which">which</span> <span word="can">can</span> <span word="occur">occur</span> <span word="in">in</span> 45 <span word="consecutive">consecutive</span></p><p> <span word="days">days</span> <span word="is">is</span>____</p><p> 6、<span word="Saul">Saul</span> <span word="plays">plays</span> <span word="a">a</span> <span word="video">video</span> <span word="game">game</span> <span word="in">in</span> <span word="which">which</span> <span word="he">he</span> <span word="scores">scores</span> 4 <span word="for">for</span> <span word="a">a</span> <span word="hit">hit</span> <span word="and">and</span> <span word="lost">lost</span> 6 <span word="for">for</span> <span word="a">a</span> <span word="miss">miss</span>. <span word="After">After</span> 20 <span word="rounds">rounds</span> <span word="his">his</span> <span word="score">score</span> <span word="is">is</span> 30. <span word="The">The</span> <span word="number">number</span> <span word="of">of</span> <span word="times">times</span> <span word="he">he</span> <span word="has">has</span> <span word="missed">missed</span> <span word="is">is</span>____.</p><p> 7、<span word="Three">Three</span> <span word="girls">girls</span> <span word="A">A</span>, <span word="B">B</span> <span word="and">and</span> <span word="C">C</span> <span word="run">run</span> <span word="in">in</span> <span word="a">a</span> 100 <span word="m">m</span> <span word="race">race</span>. <span word="When">When</span> <span word="A">A</span> <span word="finishes">finishes</span>, <span word="B">B</span> <span word="is">is</span> 10 <span word="m">m</span></p><p> <span word="behind">behind</span> <span word="A">A</span> <span word="and">and</span> <span word="when">when</span> <span word="B">B</span> <span word="finishes">finishes</span> <span word="C">C</span> <span word="is">is</span> 20 <span word="m">m</span> <span word="behind">behind</span> <span word="B">B</span>. <span word="How">How</span> <span word="far">far</span> <span word="in">in</span> <span word="metres">metres</span> <span word="was">was</span> <span word="C">C</span> <span word="from">from</span> <span word="A">A</span> <span word="when">when</span> <span word="A">A</span> <span word="finished">finished</span>?(<span word="Lets">Lets</span> <span word="assume">assume</span> <span word="all">all</span> <span word="the">the</span> <span word="athletes">athletes</span> <span word="run">run</span> <span word="at">at</span> <span word="a">a</span> <span word="constant">constant</span> <span word="speed">speed</span>)</p><p> 8、<span word="The">The</span> <span word="areas">areas</span> <span word="of">of</span> <span word="the">the</span> <span word="faces">faces</span> <span word="of">of</span> <span word="a">a</span> <span word="rectangulabox">rectangulabox</span> <span word="are">are</span> 84 <span word="cm">cm</span>2 , 70 <span word="cm">cm</span>2<span word="and">and</span> 30 <span word="cm">cm</span>2.<span word="The">The</span> <span word="volume">volume</span> <span word="of">of</span> <span word="the">the</span> <span word="box">box</span> <span word="in">in</span> <span word="cm">cm</span>3 <span word="is">is</span>____.</p>
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