已选分类
管理学
单选题Kim bought a total of $2.65 worth of postage stamps in four denominations. If she bought an equal number of 5-cent and 25-cent stamps and twice as many 10-cent stamps as 5-cent stamps, what is the least number of 1-cent stamps she could have bought?
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 counter- clockwise), 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The chart above shows how Jeff spent his earnings for one year. How much did Jeff spend for clothing?
(1)He spent $18 during the year on tennis balls.
(2)He spent $190 during the year on recreation
单选题Essayist: The existence of a moral order in the universe—i.e., an order in which bad is always eventually punished and good rewarded—depends upon human souls being immortal. In some cultures this moral order is regarded as the result of a karma that controls how one is reincarnated, in others it results from the actions of a supreme being who metes out justice to people after their death. But however a moral order is represented, if human souls are immortal, then it follows that the bad will be punished.
Which one of the following most accurately describes a flaw in the essayist"s reasoning?
单选题If n is a positive integer, is the value of b-a at least twice the value of 3n-2n? (1)a=2n+1 and b=3n+1 (2)n=3 (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Whichofthefollowinginequalitiesisanalgebraicexpressionfortheshadedpartofthenumberlineabove?
单选题In a refinery, the capacity of oil tank A is 70 per cent of the capacity of oil tank B. How many more gallons of oil are in tank A than in tank B? (1)Tank A is 90 percent full; tank B is 50 percent full. (2)When full, tank A contains 50,000 gallons of oil.
单选题In 1985 the city"s Fine Arts Museum sold 30,000 single-entry tickets. In 1986 the city"s Folk Arts and Interior Design museums opened, and these three museums together sold over 80,000 such tickets that year. These museums were worth the cost, since more than twice as many citizens are now enjoying the arts.
Which of the following, if true, most seriously weakens the author"s assertion that more than twice as many citizens are now enjoying the arts?
单选题If n is a prime number greater than 3, what is the remainder when n2 is divided by 12? (A) 0 (B) 1 (C) 2 (D) 3 (E) 5
单选题Car X and car Y ran a 500-kilometer race, what was the average speed of car X? (1)Car X completed the race in 6 hours and 40 minutes. (2)Car Y, at an average speed of 100 kilometers per hour, completed the race 1 hour and 40 minutes before car X crossed the finish line. (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 the sum of a set of ten different positive prime numbers is an even number, which of the following prime numbers CANNOT be in the set? (A) 2 (B) 3 (C) 5 (D) 7 (E) 11
单选题Forallrealnumbersν,theoperationν*isdefinedbytheequation.If(ν*)*=8,thenν=
单选题Bowls X and Y each contained exactly 2 jelly beans, each of which was either red or black, One of the jelly beans in bowl X was exchanged with one of the jelly beans in bowl Y. After the exchange, were both of the jelly beans in bowl X black? (1)Before the exchange, bowl X Contained 2 black jelly beans. (2)After the exchange, bowl Y contained 1 jelly bean of each color.
单选题If ⊙ denotes a mathematical operation, does x⊙y=y⊙x for all x and y? (1)For all z and y, x⊙y=2(x2+y2) (2)For all y, 0⊙y=2y2
单选题Houses built during the last ten years have been found to contain indoor air pollution at levels that are, on average, much higher than the levels found in older houses. The reason air-pollution levels are higher in the newer houses is that many such houses are built near the sites of old waste dumps or where automobile emissions are heavy.
Which of the following, if true, calls into question the explanation above?
单选题Virginia, Adrienne, and Dennis have taught history for a combined total of 96 years. If Virginia has taught for 9 more years than Adrienne and for 9 fewer years than Dennis, for how many years has Dennis taught? (A) 23 (B) 32 (C) 35 (D) 41 (E) 44
单选题Twopulleysareconnectedbyabeltasshowninthedrawingabove.IfpulleyQmakes300evolutionsperminute,howmanyrevolutionsperminutedoespulleyPmake?(1)Thelengthofthebeltis12π.(2)TheratiooftheradiusofpulleyPtotheradiusofpulleyQis2to1.
单选题Ifs1,s2,s3…isthesequencesuchthatsnforallpositiveintegersn,thentheproductofthefirst10termsofthissequenceis
单选题Like most other coastal towns in Norway, the town of Stavanger was quiet and peaceful until the early 1960"s, when it became Norway"s center for offshore oil exploration. Between then and now, violent crime and vandalism in Stavanger have greatly increased. Stavanger"s social problems probably resulted from the oil boom, since violent crime and vandalism have remained low in coastal towns in Norway that have had no oil boom.
Which of the following most accurately describes the method of reasoning employed in the argument?
单选题A toy store regularly sells all stock at a discount of 20 percent to 40 percent. If an additional 25 percent were deducted from the discount price during a special sale, what would be the lowest possible price of a toy costing $16 before any discount? (A) $5.60 (B) $7.20 (C)$8.80 (D) $9.60 (E) $15.20