GRE数学经典题目及答案分享（1）
<p> 本系列为同学们整理了<span word="GRE">GRE</span>数学中出现的一些高频高质量的题目，并配有解析，希望同学们认真备考，都能取得好成绩</p><p> 1.<span word="Each">Each</span> <span word="employee">employee</span> <span word="of">of</span> <span word="a">a</span> <span word="certain">certain</span> <span word="company">company</span> <span word="is">is</span> <span word="in">in</span> <span word="either">either</span> <span word="Department">Department</span> <span word="X">X</span> <span word="orDepartment">orDepartment</span> <span word="Y">Y</span>, <span word="and">and</span> <span word="there">there</span> <span word="are">are</span> <span word="more">more</span> <span word="than">than</span> <span word="twice">twice</span> <span word="as">as</span> <span word="many">many</span> <span word="employees">employees</span> <span word="inDepartment">inDepartment</span> <span word="X">X</span> <span word="as">as</span> <span word="in">in</span> <span word="Department">Department</span> <span word="Y">Y</span>. <span word="The">The</span> <span word="average">average</span> <span word="salary">salary</span></p><p><span word="is">is</span> $25,000 <span word="for">for</span> <span word="the">the</span> <span word="employees">employees</span> <span word="in">in</span> <span word="Department">Department</span> <span word="X">X</span> <span word="and">and</span> <span word="is">is</span> $35,000 <span word="for">for</span> <span word="theemployees">theemployees</span> <span word="in">in</span> <span word="Department">Department</span> <span word="Y">Y</span>.<span word="Which">Which</span> <span word="of">of</span> <span word="the">the</span> <span word="following">following</span> <span word="amounts">amounts</span> <span word="could">could</span> <span word="bethe">bethe</span> <span word="average">average</span> <span word="salary">salary</span> <span word="for">for</span> <span word="all">all</span> <span word="of">of</span> <span word="the">the</span> <span word="employees">employees</span> <span word="in">in</span> <span word="the">the</span> <span word="company">company</span>?<span word="Indicate">Indicate</span> <span word="all">all</span> <span word="such">such</span> <span word="amounts">amounts</span>.</p><p> <span word="A">A</span> $26,000</p><p> <span word="B">B</span> $28,000</p><p> <span word="C">C</span> $29,000</p><p> <span word="D">D</span> $30,000</p><p> <span word="E">E</span> $31,000</p><p> <span word="F">F</span> $32,000</p><p> <span word="G">G</span> $34,000</p><p> 本题我们要注意到题目中的<span word="more">more</span> <span word="than">than</span> <span word="twice">twice</span>的字眼，我们当做<span word="twice">twice</span>算的时候，结果是/3约等于28333，因为有<span word="more">more</span> <span word="than">than</span>，所以选的答案要么是比前面这个数大，要么小，又由于<span word="more">more</span>的是<span word="X">X</span>部门的，那么肯定会将平均工资给拉低了，因此，选比前面那个数小的答案，<span word="AB">AB</span>都可以了。。</p><p> 2.<span word="Working">Working</span> <span word="alone">alone</span> <span word="at">at</span> <span word="its">its</span> <span word="constant">constant</span> <span word="rate">rate</span>, <span word="machine">machine</span> <span word="A">A</span> <span word="produces">produces</span> <span word="k">k</span> <span word="car">car</span> <span word="parts">parts</span> <span word="in">in</span> 10<span word="minutes">minutes</span>. <span word="Working">Working</span> <span word="alone">alone</span> <span word="at">at</span> <span word="its">its</span> <span word="constant">constant</span> <span word="rate">rate</span>, <span word="machine">machine</span> <span word="B">B</span> <span word="produces">produces</span> <span word="k">k</span> <span word="car">car</span> <span word="partsin">partsin</span> 15 <span word="minutes">minutes</span>. <span word="How">How</span> <span word="many">many</span> <span word="minutes">minutes</span> <span word="does">does</span> <span word="it">it</span> <span word="take">take</span> <span word="machines">machines</span> <span word="A">A</span> <span word="and">and</span> <span word="B">B</span>, <span word="workingsimultaneously">workingsimultaneously</span> <span word="at">at</span> <span word="their">their</span> <span word="respective">respective</span> <span word="constant">constant</span> <span word="rates">rates</span>, <span word="to">to</span> <span word="produce">produce</span> <span word="k">k</span> <span word="car">car</span> <span word="parts">parts</span>? ____________<span word="minutes">minutes</span></p>
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