GRE语文高分特训500题【命题分析+答题攻略+强化训练】(GRE General Test数字输入

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第5章 GRE General Test数字输入高分特训100题

数字输入题不提供选项，考生需算出正确答案将其填入所给方框中，答案可能为整数、
小数或分数。对于答案为整数或小数的题目，题目下只有一个方框；而答案为分数的题目，
题目下会有上下两个方框，上方填分子，下方填分母，中间由一道分数线隔开。

◆算术（Arithmetic）
1. For the following question, enter your answer in the box.
In a graduating class of 236 students, 142 took algebra and 121 took chemistry.
What is the greatest possible number of students that could have taken both
algebra and chemistry?
students
【答案】121
【解析】分析题意可知，既选择代数学又选择化学的最大学生数就是选择化学的学生数，为
121人。

2. If 500 pounds of mush will feed 20 pigs for a week, for how many days will 200
pounds of mush feed 14 pigs?
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【答案】4
【解析】由于500磅玉米面能支撑20 pig-week，即140 pig-days那么200磅玉米面能
支撑2/5×140pig-days =56 pig-days，而=4 days。

3. If 5/9 of the members of the school chorus are boys, what is the ratio of girls to
boys in the chorus?

【答案】4/5
【解析】根据题干信息，合唱队中女孩和男孩的比例为（1-5/9）：5/9=4/5。

4. Directions: For the following question enter your answer in the box.
If four boys can shovel a driveway in two hours, how many minutes would it take
five boys to shovel that driveway? (Assume that each boy works at the same rate.)
minutes
【答案】96
【解析】2小时=120分钟，那么根据题干信息，完成铲车道的工作总量为4× 120 = 480；
那么5个男孩铲车道需要花的时间为480÷5=96分钟。
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5. Jordan had 3 hits in his first 4 baseball games and 4 hits in his next 4 games.

What is the average number of hits Jordan had in all of his games?

【答案】3.5
【解析】要计算乔丹的平均击球次数，首先要计算出他总击球次数：
3×4=12, 4×4=16
12+16=28
然后，计算平均值：
28÷8=3.5。
多出的

6. Direction: For the following question enter your answer in the box.
Eric can address 40 envelopes per hour. At this rate, how many envelopes can he
address in 99 minutes?

【答案】66
【解析】1小时等于60分钟；根据题干中的已知信息，Eric一分钟能填写的信封数为40/60，
即2/3；那么他99分钟能填的信封数为99×（2/3）=66。

7. For the following question, enter your answer in the box.
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Of the 200 seniors at Monroe High School, exactly 40 are in the band, 60 are in the

orchestra, and 10 are in both. How many seniors are in neither the band nor the
orchestra?

【答案】110
【解析】根据题目中已知的数量关系，可以画如下数量图;

根据数量图可知，既不在乐队也不在管弦乐队的的人数为200－（30+10+50）=110。
8. For this question, write your answer in the box.
A stock portfolio that was originally worth $15,000 has increased in value by
$10,000. By what percentage of the original value has the portfolio increased?
Give your answer rounded to the nearest whole percent,

【答案】67%.
【解析】增长率=10,000/15,000=0.66…≈67%
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9. For this quests, write your answer in the box.

Seventy percent of the cards in a deck are green and the rest are red. Twenty
percent of the green cards are rare and 50％ of the red cards are rare. What
percentage of all the cards are rare?

【答案】29
【解析】据题意可知70%×20%+30%×50%=0.14+0.15=29%，故答案为29%。

10. For this question, write your answer in the box.
If 285/2x is an integer, what the greatest possible value of x?

【答案】10.
【解析】285 =(2×2×7)5= (22×7)5=210×75，所以可知x=10。

11. For this question, write your answer in the box.
What is the least common multiple of 21 and 35?

【答案】105
【解析】21=3×7，35=5×7，所以它们的最小公倍数=3×5×7=105
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12. In a singles tennis tournament that has 125 entrants, a player is eliminated
whenever he loses a match. How many matches are played in the entire
tournament?

【答案】124
【解析】根据题意可知，比完一场比赛就淘汰一名参赛者，那么比赛的总数是124.

13. Martina needs 35 gallons of fuel in each winter month to heat her home. Each
spring and fall month she uses 15 gallons of fuel. She uses no fuel during the
summer. What part of her annual heating bill is spent during the winter?
Give your answer as a fraction:

【答案】 713
【解析】根据题意，Martina冬季的燃料需求量是35×3=105加仑，春秋的燃料需求量为
15×6=90 加仑，那么
一年的燃料需求总量为105+90=195加仑；那么冬季的燃料需求量占总需求量的比率为
105/195=713 。