[外语类试卷]GRE(QUANTITATIVE)模拟试卷20及答案与解析.doc

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1、GRE( QUANTITATIVE)模拟试卷 20及答案与解析 0 Directions: In the following type of question, two quantities appear, one in Column A and one in Column B. You must compare them. The correct answer to the question is A if the quantity in Column A is greater B if the quantity in Column B is greater C if the two qua

2、ntities are equal D if it is impossible to determine which quantity is greater Notes: Sometimes information about one or both of the quantities is centered above the two columns. If the same symbol appears in both columns, it represents the same thing each time. 4 6 9 11 15 What is the measure of th

3、e angle formed by the minute and hour hands of a clock at 1:50? ( A) 90 ( B) 95 ( C) 105 ( D) 115 ( E) 120 16 Which of the following CANNOT be expressed as the sum of three consecutive integers? ( A) 18 ( B) 24 ( C) 28 ( D) 33 ( E) 36 17 Sandrine is now 5 times as old as Nicholas, but 7 years from n

4、ow, she will be 3 times as old as he will be then. How old is Sandrine now? ( A) 15 ( B) 20 ( C) 21 ( D) 25 ( E) 35 18 If 3a=b and 3c=d,then bd= ( A) 3ac ( B) 3a+c ( C) 6a+c ( D) 9ac ( E) 9a+c 19 If A is the point (-4, 1) and B is the point (2, 1), what is the area of the circle which has AB as a di

5、ameter? ( A) 3 ( B) 6 ( C) 9 ( D) 12 ( E) 36 20 If the average (arithmetic mean) of 10, 20, 30, 40, and x is 60, what is the value of x? ( A) 50 ( B) 60 ( C) 100 ( D) 150 ( E) 200 21 Bob and Jack share an apartment. If each month Bob pays a dollars and Jack pays b dollars, what percent of the total

6、cost does Bob pay? 22 If a is increased by 10% and b is decreased by 10%, the resulting numbers will be equal. What is the ratio of a to b? 23 In the figure at the right, the legs of fight triangle ACB are diameters of the two semicircles. If AB = 4, what is the sum of the areas of the semicircles?

7、( A) ( B) 2 ( C) 4 ( D) 8 ( E) 16 24 For how many positive integers m 100 is (m -5)(m -45) positive? ( A) 45 ( B) 50 ( C) 58 ( D) 59 ( E) 60 24 25 According to the survey data, on average, how many hours will a typical teenager spend watching television and sleeping in one year? ( A) 1,460 hours ( B

8、) 2,555 hours ( C) 3,650 hours ( D) 4,015 hours ( E) 4,745 hours 26 Which of the following represents the ratio of the hours teenagers spend on Work/School to the hours teenagers spend on all activities? ( A) 17:24 ( B) 7:17 ( C) 7:24 ( D) 24:17 ( E) 24:7 GRE( QUANTITATIVE)模拟试卷 20答案与解析 1 【正确答案】 C 2 【正确答案】 C 3 【正确答案】 C 4 【正确答案】 B 5 【正确答案】 C 6 【正确答案】 C 7 【正确答案】 A 8 【正确答案】 C 9 【正确答案】 B 10 【正确答案】 A 11 【正确答案】 B 12 【正确答案】 A 13 【正确答案】 C 14 【正确答 案】 D 15 【正确答案】 D 16 【正确答案】 C 17 【正确答案】 E 18 【正确答案】 B 19 【正确答案】 C 20 【正确答案】 E 21 【正确答案】 E 22 【正确答案】 A 23 【正确答案】 B 24 【正确答案】 D 25 【正确答案】 E 26 【正确答案】 C

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