单选题Company R"s annual profit has increased by a constant amount each calendar year since 1985. What was Company R"s annual profit in 1991? (1)In 1985 Company R"s annual profit was $212.000; in 1989 Company R"s annual profit was $242,000. (2)Company R"s annual profit has increased by $7,500 each year since 1985.

单选题If X and Y are sets of integers, X△Y denotes the set of integers that belong to set X or set Y, but not both. If X consists of 10 integers, Y consists of 18 integers，and 6 of the integers are in both X and Y, then X△Y consists of how many integers?

单选题 LEAGUE RESULTS Team Number of Games Won A 4 B 7 C 9 D 2 E 2 X According to the incomplete table above, if each of the 6 teams in the league played each of the other teams exactly twice and there were no ties, how many games did team X win? (Only 2 teams play in a game.)

单选题In how many arrangements can a teacher seat 3 girls and 3 boys in a row of 6 seats if the boys are to have the first, third, and fifth seats?

单选题A jewelry dealer initially offered a bracelet for sale at an asking price that would give a profit to the dealer of 40 percent of the original cost. What was the original cost of the bracelet? (1)After reducing this asking price by 10 percent, the jewelry dealer sold the bracelet at a profit of $403. (2)The Jewelry dealer sold the bracelet for $1,953. (A) 条件(1)充分，但条件(2)不充分． (B) 条件(2)充分，但条件(1)不充分． (C) 条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分． (D) 条件(1)充分，条件(2)也充分． (E) 条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．

单选题Inacertainanimalpopulation,foreachofthefirst3monthsoflife,theprobabilitythatananimalwilldieduringthatmonthis.Foragroupof200newbornmembersofthepopulation,approximatelyhowmanywouldbeexpectedtosurvivethefirst3monthsoflife?

单选题WhatfractionalpartofthetotalsurfaceareaofcubeCisred?(1)Eachof3facesofcisexactlyred.(2)Eachof3facesofCisentirelywhite.

单选题If,wherepandqarenonzerointegers,isnaninteger?(1)n2isaninteger.(2)isaninteger.

单选题Ifnisaninteger,isaninteger?(1)isaninteger.(2)isaninteger.

单选题If the two-digit integers M and N are positive and have the same digits, but in reverse order, which of the following CANNOT be the sum of M and N? (A) 181 (B) 165 (C) 121 (D) 99 (E) 44

单选题A 2-year certificate of deposit is purchased for k dollars. If the certificate earns interest at an annual rate of 6 percent compounded quarterly, which of the following represents the value, in dollars, of the certificate at the end of the 2 years?

单选题 The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given.You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether Ａ. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. Ｂ. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. Ｃ. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. Ｄ. EACH statement ALONE is sufficient. Ｅ. Statements (1) and (2) TOGETHER are NOT sufficient.

单选题Ifmoneyisinvestedatrpercentinterest,compoundedannually,theamountoftheinvestmentwilldoubleinapproximatelyyears．IfPat'sparentsinvested$5,000inalong-termandthatpays8percentinterest,compoundedannually,whatwillbetheapproximatetotalamountoftheinvestment18yearslater,whenPatisreadyforcollege?

单选题It is widely assumed that a museum is helped financially when a generous patron donates a potential exhibit. In truth, however, donated objects require storage space, which is not free, and routine conservation, which is rather expensive. Therefore, such gifts exacerbate rather than lighten the demands made on a museum"s financial resources. Which of the following, if true, most seriously weakens the argument above?

单选题Iftheaverage(arithmeticmean)of5positivetemperaturesis32degreesFahrenheit,thenthesumofthe3greatestofthesetemperatures,indegreesFahrenheit,couldbe

单选题The public is well aware that high blood cholesterol levels raise the risk of stroke caused by blood clots. But a recent report concludes that people with low blood cholesterol levels are at increased risk of the other lethal type of stroke-cerebral hemorrhage, caused when a brain artery bursts. The report suggests that because blood cholesterol plays a vital role in maintaining cell membranes, low blood cholesterol weakens artery walls, making them prone to rupture. The conclusion thus supports a long-standing contention by Japanese researchers that Western diets better protect against cerebral hemorrhage than do non-Western diets. The argument is based on which one of the following assumptions?

单选题Can the positive integer p be expressed as the product of two integers, each of which is greater than 1? (1)31＜p＜37 (2)p is odd (A) 条件(1)充分，但条件(2)不充分． (B) 条件(2)充分，但条件(1)不充分． (C) 条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分． (D) 条件(1)充分，条件(2)也充分． (E) 条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．

单选题If ω, x, y, and z are non-negative integers, each less than 3, and ω(33)+x(32)+y(3)+z=34，thenω+z= (A) 0 (B) 1 (C) 2 (D) 3 (E) 4

单选题On a certain 10-question test, each question after the first question is worth 2 points more than the previous question. If the greatest number of points that can be scored on the test is 100, how many points is the eighth question worth?

单选题Politician: Pundits claim that by voting for candidates who promise to cut taxes, people show that they want the government to provide fewer services than it has been providing. By that reasoning, however, people who drink too much alcohol at a party in the evening want a headache the next morning. Which of the following could replace the statement about people who drink too much without undermining the force of the politician"s argument?