题库 | 考满分，百万出国党的口碑之选。

序号	题目内容
141	Committee X and Committee Y, which have no common members, will combine to form Committee Z. Does Committee X have more members than Committee Y ?(1)The average (arithmetic mean) age of the members of Committee X is 25.7 years and the average age of the members of Committee Y is 29.3 years.(2)The average (arithmetic mean) age of the members of Committee Z will be 26.6 years.
142	What amount did Jean earn from the commission on her sales in the first half of 1988 ?(1)In 1988 Jean's commission was 5 percent of the total amount of her sales.(2)The amount of Jean's sales in the second half of 1988 averaged $10,000 per month more than in the first half.
143	The price per share of Stock X increased by 10 percent over the same time period that the price per share of Stock Y decreased by 10 percent. The reduced price per share of Stock Y was what percent of the original price per share of Stock X ?(1)The increased price per share of Stock X was equal to the original price per share of Stock Y.(2)The increase in the price per share of Stock X was $$\frac{10} {11}$$ the decrease in the price per share of Stock Y.
144	In the figure above, if the area of triangular region D is 4, what is the length of a side of square region A ?(1)The area of square region B is 9.(2)The area of square region C is $$\frac{64}{9}$$
145	If Sara's age is exactly twice Bill's age, what is Sara's age?(1)Four years ago, Sara's age was exactly 3 times Bill's age.(2)Eight years from now, Sara's age will be exactly 1.5 times Bill's age.
146	A report consisting of 2,600 words is divided into 23 paragraphs. A 2-paragraph preface is then added to the report. Is the average (arithmetic mean) number of words per paragraph for all 25 paragraphs less than 120 ?(1)Each paragraph of the preface has more than 100 words.(2)Each paragraph of the preface has fewer than 150 words.
147	A certain bookcase has 2 shelves of books. On the upper shelf, the book with the greatest number of pages has 400 pages. On the lower shelf, the book with the least number of pages has 475 pages. What is the median number of pages for all of the books on the 2 shelves?(1)There are 25 books on the upper shelf.(2)There are 24 books on the lower shelf.
148	The figure above shows the number of meters in the lengths of the four sides of a jogging path. What is the total distance around the path?(1)One of the sides of the path is 120 meters long.(2)One of the sides of the path is twice as long as each of the two shortest sides.
149	In the rectangular coordinate system above, if OP < PQ, is the area of region OPQ greater than 48 ?(1)The coordinates of point P are (6,8).(2)The coordinates of point Q are (13,0).
150	$${S}=\frac{\frac{2}{n}}{\frac{1}{x}+\frac{2}{3x}}$$In the expression above, if $${x}{n}≠{0}$$, what is the value of S?(1)x = 2n(2)$$n =\frac{1}{2}$$
151	If n is a positive integer and $$k = {5.1}{10}^{n}$$, what is the value of k ?(1)$$6,000 < k < 500,000$$(2)$${k}^{2}={2.601}{10}^{9}$$
152	If Carmen had 12 more tapes, she would have twice as many tapes as Rafael. Does Carmen have fewer tapes than Rafael?(1)Rafael has more than 5 tapes.(2)Carmen has fewer than 12 tapes.
153	If x is an integer, is $$x \mid x \mid < {2}^{X}$$ ?(1)$$x < 0$$(2)$$x = -10$$
154	If n is a positive integer, is the value of b - a at least twice the value of $${3}^{n}-{2}^{n}$$ ?(1)$$a ={2}^{n+1}$$ and $$b={3}^{n+1}$$(2)$$n = 3$$
155	The inflation index for the year 1989 relative to the year 1970 was 3.56, indicating that, on the average, for each dollar spent in 1970 for goods, $3.56 had to be spent for the same goods in 1989. If the price of a Model K mixer increased precisely according to the inflation index, what was the price of the mixer in 1970 ?(1)The price of the Model K mixer was $102.40 more in 1989 than in 1970.(2)The price of the Model K mixer was $142.40 in 1989.
156	Is $${5}^{k}$$ less than 1,000 ?(1)$${5}^{k+1} >3,000$$(2)$${5}^{k-1}={5}^{k}-500$$
157	The hypotenuse of a right triangle is 10 cm. What is the perimeter, in centimeters, of the triangle?(1)The area of the triangle is 25 square centimeters.(2)The 2 legs of the triangle are of equal length.
158	Every member of a certain club volunteers to contribute equally to the purchase of a $60 gift certificate. How many members does the club have?(1)Each member's contribution is to be $4.(2)If 5 club members fail to contribute, the share of each contributing member will increase by $2.
159	If $$x < 0$$, is $$y > 0$$ ?(1)$$\frac{x}{y}<{0}$$(2)$$y-x >0$$
160	What is the circumference of the circle above with center 0 ?(1)The perimeter of $$\Delta OXZ$$ is $$20+10\sqrt 2$$(2)The length of arc $$XYZ$$ is $$5\pi$$.

序号

题目内容

141

Committee X and Committee Y, which have no common members, will combine to form Committee Z. Does Committee X have more members than Committee Y ?(1)The average (arithmetic mean) age of the members of Committee X is 25.7 years and the average age of the members of Committee Y is 29.3 years.(2)The average (arithmetic mean) age of the members of Committee Z will be 26.6 years.

142

What amount did Jean earn from the commission on her sales in the first half of 1988 ?(1)In 1988 Jean's commission was 5 percent of the total amount of her sales.(2)The amount of Jean's sales in the second half of 1988 averaged $10,000 per month more than in the first half.

143

The price per share of Stock X increased by 10 percent over the same time period that the price per share of Stock Y decreased by 10 percent. The reduced price per share of Stock Y was what percent of the original price per share of Stock X ?(1)The increased price per share of Stock X was equal to the original price per share of Stock Y.(2)The increase in the price per share of Stock X was $$\frac{10} {11}$$ the decrease in the price per share of Stock Y.

144