gre数学考试代数文字的重点试题2 11.Mechanical toy cars A, B, and C, each traveling at its own uniform rate, started from the same point at the same time and raced a 400-meter course. When A crossed the finish line. B was 40 meters behind A, and C was 58 meters behind A. When B crossed the finish line, how many meters was C from the finish line? A.16 B.18 C.19 D.20 E.22 答案：D 12.A school bus has 10 double seats in each of 2 rows. Two students can sit in each double seat. If an empty bus starts out and makes two stops, picking up three times the number of students at the second stop as at the first stop, and if the bus is then filled to seating capacity, how many students got on the bus at the second stop? A.5 B.10 C.15 D.20 E.30 答案：E 13.The daily rate for a hotel room that sleeps 4 people is $39 for one person and x dollars for each additional person. If 3 people take the room for one day and each pays $21 for the room, what is the value of x? A.6 B.8 C.12 D.13 E.24 答案：C 14.A buzzer sounds every 15 minutes. If the buzzer sounded at 12:40, which of the following could be a time at which the buzzer sounded? A.4:05 B.5:30 C.6:45 D.7:15 E.8:10 答案：E 15.The cost, in dollars, for an appliance repair at a certain company is 1.2p+20h, where p is the wholesale price of the parts, in dollars, and h is the number of hour it takes to repair the appliance. What is the cost of repairing an appliance if the wholesale price of the parts is$15 and it takes 2 hours to repair it ? A.$12 B. $18 C. $20 D. $40 E. $58 答案：E 16.Three salespeople are paid commissions in proportion to the amount of their sales, which total $25,000, $40,000,and $60,000, respectively. If a total of $20,000 is allocated for these three commission, what is the amount of the largest commission paid? A.$8,000 B.$8,400 C.$9,600 D.$10,000 E.$12,000 答案：C 17.The decorating committee for a dance plans to fringe the 3-inch-wide end of a streamer by making small cuts every 1/16 inch. How many cuts must be made to fringe the end? A.45 B.46 C.47 D.48 E.49 答案：C 18.If two trains are 120 miles apart and are traveling toward each other at a constant rate of 30 mph and 40 mph, respectively, how far apart will they be exactly 1 hour before they meet? A.10 miles B.30 miles C.40 miles D.50 miles E.70 miles 答案：E 19.On a highway there is an electric pole every 96 feet. If the poles are numbered consecutively, what is the number of the pole 2 miles past pole number 56?(1 mile=5,280feet) A.109 B.110 C.152 D.165 E.166 答案：E 20.In a certain room, all except 18 of the people are over 50 years of age. If 15 of the people in the room are under 50 years of age, how many people are in the room? A.27 B.30 C.33 D.36 E. It cannot be determined from the information given. 答案：E
gre数学考试代数文字的重点试题的延伸阅读——GRE数学部分答题技巧 (1)、GRE考试之大小比较题 (Quantitative Comparison) a)解答之前，两个Column都要先认真看一看; b)注意出题的目的在于强调速度和捷径，因此不要陷于冗长的演算过程; c)尽可能地简化问题，必要时画出草图或做上记号; d)当问题中没有出现变量而都是数值时，不可以选(D); e)当问题中出现变量x、y、z或a、b、c时，可以由0、1和-1的简单数值代替计算;如果代入不同的数值，有不同的大小关系则就选(D); f)要特别注意数学比较大小的最后几题。 (2)、GRE考试之计量能力题 (Math Ability) a)仔细阅读题目，把要求解的地方圈起来; b)画出草图或在图上做记号; c)若有简单的公式或解法，则尽量用简单的方法直接求解，再选择正确的答案; d)若没有公式可循，则试着消去不合理的答案，即由答案做起，代入题目中验证是否正确，病且用近似值求法来简化计算过程，最终求出正确答案; e)要特别注意最后的几题，一般设有复杂而巧妙的陷阱。 (3)、GRE考试之图表分析题(Graphic Analysis) a)先略读一下题目; b)检视一下图表，注意标题、图例及比较显着的变化; c)把每个题目的重点圈起来; d)太难的或容易混淆的题目要跳过去; e)如果计算的项目很繁杂，应先从可能的答案求近似值，排除不合理的答案; f)在整个数学部分的试题中，图表分析的题目应该放在最后面做。 最后注意，我们建议考生在应试数学部分的试题时一定要细心认真，考试时要有充裕时间，且已经做完一遍，最好要重新一遍。再次的验算通常可以改正四道题左右。对于我国考生来说，只有在数学部分获得高分，才能弥补部分的缺陷。 |
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