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SET ONE PART I ------------------------------------------------------------------------------------------------------------ Q1: A grocer has 400 pounds of coffee in stock, 20 percent of which is decaffeinated. If the grocer buys another 100 pounds of coffee of which 60 percent is decaffeinated, what percent, by weight, of the grocer’s stock of coffee is decaffeinated? A. 28% B. 30% C. 32% D. 34% E. 40% ------------------------------------------------------------------------------------------------------------ Q2: If 2 different representatives are to be selected at random from a group of 10 employees 1 and if p is the probability that both representatives selected will be women, is p > ? 2 1 (1) More than of the 10 employees are women. 2 1 (2) The probability that both representatives selected will be men is less than . 10 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. ------------------------------------------------------------------------------------------------------------ Q3: If the population of a certain country is 120,256,000 and its land area is 2,998,000 square kilometers, then the population per square kilometer is closest to which of the following? A. 4 B. 6 C. 20 D. 40 E. 60 ------------------------------------------------------------------------------------------------------------ Q4: ThiNganHang.com
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4.8(109 ) = 1.6(103 ) A. 30(105) B. [3(10)]6 C. 305 D. 30(106) E. 3(1012) ----------------------------------------------------------------------------------------------------------- Q5: If vmt 0, is v2m3t-4 > 0? (1) m > v2 (2) m > t-4 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. ------------------------------------------------------------------------------------------------------------ Q6: B C x y z A D In the figure shown, line segment AD is parallel to line segment BC. What is the value of x? (1) y = 50 (2) z = 40 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. ------------------------------------------------------------------------------------------------------------ ThiNganHang.com
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Q7: A certain university will select 1 of 7 candidates eligible to fill a position in the mathematics department and 2 of 10 candidates eligible to fill 2 identical positions in the computer science department. If none of the candidates is eligible for a position in both departments, how many different sets of 3 candidates are there to fill the 3 positions? A. 42 B. 70 C. 140 D. 165 E. 315 ------------------------------------------------------------------------------------------------------------ Q8: 4π The points R, T, and U lie on a circle that has radius 4. If the length of arc RTU is , 3 what is the length of line segment RU? 4 A. 3 8 B. 3 C. 3 D. 4 E. 6 ------------------------------------------------------------------------------------------------------------ Q9: For all integers n, the function f is defined by f (n) = an, where a is a constant. What is the value of f (1)? (1) f (2) = 100 (2) f (3) = -1,000 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. ------------------------------------------------------------------------------------------------------------ Q10: What is the value of (x - y)4? (1) The product of x and y is 7. (2) x and y are integers. ThiNganHang.com
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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. ------------------------------------------------------------------------------------------------------------ Q11: Mary persuaded n friends to donate $500 each to her election campaign, and then each of these n friends persuaded n more people to donate $500 each to Mary’s campaign. If no one donated more than once and if there were no other donations, what was the value of n? 1 (1) The first n people donated of the total amount donated. 16 (2) The total amount donated was $120,000. 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. ----------------------------------------------------------------------------------------------------------- Q12: 1 When n liters of fuel was added to a tank that was already full, the tank was filled to 3 7 of its capacity. In terms of n, what is the capacity of the tank, in liters? 9 10 A. n 9 4 B. n 3 3 C. n 2 9 D. n 4 7 E. n 3 ------------------------------------------------------------------------------------------------------------ Q13: If n is a positive integer, what is the remainder when 38n+3 + 2 is divided by 5? ThiNganHang.com
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A. 0 B. 1 C. 2 D. 3 E. 4 ------------------------------------------------------------------------------------------------------------ Q14: 1 Of all the students in a certain dormitory, are first-year students and the rest are 2 4 second-year students. If of the first-year students have not declared a major and if the 5 fraction of second-year students who have declared a major is 3 times the fraction of first-year students who have declared a major, what fraction of all the students in the dormitory are second-year students who have not declared a major? 1 A. 15 1 B. 5 4 C. 15 1 D. 3 2 E. 5 ------------------------------------------------------------------------------------------------------------ Q15: If p is the product of the integers from 1 to 30, inclusive, what is the greatest integer k for which 3k is a factor of p? A. 10 B. 12 C. 14 D. 16 E. 18 ------------------------------------------------------------------------------------------------------------ Q16: If x and y are positive, is x3 > y? (1) x > y (2) x > y ThiNganHang.com
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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. ------------------------------------------------------------------------------------------------------------ Q17: x y If x, y, and k are positive numbers such that ( )(10) + ( )(20) = k and if x < y, x + y x + y which of the following could be the value of k? A. 10 B. 12 C. 15 D. 18 E. 30 ------------------------------------------------------------------------------------------------------------ Q18: What is the value of the integer k? (1) k + 3 > 0 (2) k4 ≤ 0 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 ------------------------------------------------------------------------------------------------------------ Q19: Each of the 30 boxes in a certain shipment weighs either 10 pounds or 20 pounds, and average (arithmetic mean) weight of the boxes in the shipment is 18 pounds. If the average weight of the boxes in the shipment is to be reduced to 14 pounds by removing some of the 20-pound boxes, how many 20-pound boxes must be removed? A. 4 B. 6 C. 10 D. 20 E. 24 ThiNganHang.com
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------------------------------------------------------------------------------------------------------------ Q20: Tom, Jane, and Sue each purchased a new house. The average (arithmetic mean) price of the three houses was $120,000. What was the median price of the three houses? (1) The price of Tom’s house was $110,000. (2) The price of Jane’s house was $120,000. 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. ------------------------------------------------------------------------------------------------------------ Q21: The results of a certain experiment included 6 data values that were all multiples of the same number c, namely, c, 8c, 2c, 5c, 4c, and 4c. Was the average (arithmetic mean) of the 6 data values greater than 8? (1) c < 4 (2) c > 2 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. ------------------------------------------------------------------------------------------------------------ Q22: y x w z What is the value of x + y in the figure above? (1) w = 95 (2) z = 125 ThiNganHang.com
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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. ------------------------------------------------------------------------------------------------------------ Q23: The age of the Earth is approximately 1.3 × 1017 seconds, and one year is approximately 3.2 × 107 seconds. Which of the following is closest to the age of the Earth in years? A. 2.5 × 109 B. 4.1 × 109 C. 1.9 × 1010 D. 2.5 × 1011 E. 4.1 × 1011 ------------------------------------------------------------------------------------------------------------ Q24: Four staff members at a certain company worked on a project. The amounts of time that the four staff members worked on the project were in the ratio 2 to 3 to 5 to 6. If one of the four staff members worked on the project for 30 hours, which of the following CANNOT be the total number of hours that the four staff members worked on the project? A. 80 B. 96 C. 160 D. 192 E. 240 ------------------------------------------------------------------------------------------------------------ Q25: If the sequence x1, x2, x3, …, xn, … is such that x1 = 3 and xn+1 = 2xn – 1 for n 1, then x20 – x19 = A. 219 B. 220 C. 221 D. 220 - 1 E. 221 - 1 ------------------------------------------------------------------------------------------------------------ Q26: If the units digit of the three-digit positive integer k is nonzero, what is the tens digit of k? (1) The tens digit of k + 9 is 3. ThiNganHang.com
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(2) The tens digit of k + 4 is 2. 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. ------------------------------------------------------------------------------------------------------------ Q27: 2 + 2 × 3 + 3 × 4 = A. 20 B. 24 C. 40 D. 60 E. 96 ------------------------------------------------------------------------------------------------------------ Q28: Three printing presses, R, S, and T, working together at their respective constant rates, can do a certain printing job in 4 hours. S and T, working together at their respective constant rates, can do the same job in 5 hours. How many hours would it take R, working alone at its constant rate, to do the same job? A. 8 B. 10 C. 12 D. 15 E. 20 ------------------------------------------------------------------------------------------------------------ Q29: If y is the smallest positive integer such that 3,150 multiplied by y is the square of an integer, then y must be A. 2 B. 5 C. 6 D. 7 E. 14 ------------------------------------------------------------------------------------------------------------ Q30: ThiNganHang.com
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The total cost of an office dinner was shared equally by k of the n employees who attended the dinner. What was the total cost of the dinner? (1) Each of the k employees who shared the cost of the dinner paid $19. (2) If the total cost of the dinner had been shared equally by k + 1 of the n employees who attended the dinner, each of the k + 1 employees would have paid $18. 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. ------------------------------------------------------------------------------------------------------------ Q31: Three of the four vertices of a rectangle in the xy-coordinate plane are (-3, 10), (2, 10), and (2, 1). What is the fourth vertex? A. (-3, 1) B. (-3, 2) C. (-2, 10) D. (2, -3) E. (3, 10) ------------------------------------------------------------------------------------------------------------ Q32: r s t u v w x y z Each of the letters in the table above represents one of the numbers 1, 2, or 3, and each of these numbers occurs exactly once in each row and exactly once in each column. What is the value of r? (1) v + z = 6 (2) s + t + u + x = 6 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. ------------------------------------------------------------------------------------------------------------ ThiNganHang.com
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Q33: At a certain school, the ratio of the number of second graders to the number of fourth graders is 8 to 5, and the ratio of the number of first graders to the number of second graders is 3 to 4. If the ratio of the number of third graders to the number of fourth graders is 3 to 2, what is the ratio of the number of first graders to the number of third graders? A. 16 to 15 B. 9 to 5 C. 5 to 16 D. 5 to 4 E. 4 to 5 ------------------------------------------------------------------------------------------------------------ Q34: In the xy-plane, what is the slope of line l? (1) Line l dose not intersect the line with equation y = 1 - x. (2) Line l intersects the line with equation y = x – 1. 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. ------------------------------------------------------------------------------------------------------------ Q35: Guy’s net income equals his gross income minus his deductions. By what percent did Guy’s net income change on January 1, 1989, when both his gross income and his deductions increased? (1) Guy’s gross income increased by 4 percent on January 1, 1989. (2) Guy’s deductions increased by 15 percent on January 1, 1989. 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. ------------------------------------------------------------------------------------------------------------ Q36: x -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 ThiNganHang.com
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On the number line, the shaded interval is the graph of which of the following inequalities? A. x 4 B. x 8 C. x − 2 4 D. x − 2 6 E. x + 2 6 ------------------------------------------------------------------------------------------------------------ Q37: Of the 500 business people surveyed, 78 percent said that they use their laptop computers at home, 65 percent said that they use them in hotels, and 52 percent said that they use them both at home and in hotels. How many of the business people surveyed said that they do not use their laptop computers either at home or in hotels? A. 45 B. 55 C. 65 D. 95 E. 130 ------------------------------------------------------------------------------------------------------------ PART TWO ------------------------------------------------------------------------------------------------------------ Q1: During her presidency of the short-lived Woman’s State Temperance Society (1852- 1853), Elizabeth Cady Stanton, as she was a staunch advocate of liberalized divorce laws, scandalized many of her most ardent supporters in her suggestion that drunkenness should be made sufficient cause for divorce. A. as she was a staunch advocate of liberalized divorce laws, scandalized many of her most ardent supporters in her suggestion that drunkenness should be B. as she was a staunch advocate for liberalized divorce laws, scandalized many of her most ardent supporters by her suggestion of drunkenness being C. in being a staunch advocate for liberalized divorce laws, had scandalized many of her most ardent supporters with the suggestion of drunkenness being D. a staunch advocate of liberalized divorce laws, scandalized many of her most ardent supporters by suggesting that drunkenness be E. a staunch advocate of liberalized divorce laws, she scandalized many of her most ardent supporters in suggesting that drunkenness should be ------------------------------------------------------------------------------------------------------------ Q2: ThiNganHang.com
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By merging its two publishing divisions, the company will increase their share of the country’s $21 billion book market from 6 percent to 10 percent, a market ranging from obscure textbooks to mass-market paperbacks. A. their share of the country’s $21 billion book market from 6 percent to 10 percent, a market ranging B. from 6 percent to 10 percent its share of the $21 billion book market in the country, which ranges C. to 10 percent from 6 percent in their share of the $21 billion book market in the country, a market ranging D. in its share, from 6 percent to 10 percent, of the $21 billion book market in the country, which ranges E. to 10 percent from 6 percent its share of the country’s $21 billion book market, which ranges ------------------------------------------------------------------------------------------------------------ Q3: A product that represents a clear technological advance over competing products can generally command a high price. Because technological advances tend to be quickly surpassed and companies want to make large profits while they still can, many companies charge the greatest price the market will bear when they have such a product. But large profits on the mew product will give competitors a strong incentive to quickly match the mew product’s capabilities. Consequently, the strategy to maximize overall profit from a new product is to charge less than the greatest possible price. In the argument above, the two portions in boldface play which of the following roles? A. The first is an assumption that forms the basis for a course of action that the argument criticizes; the second presents the course of action endorsed by the argument. B. The first is a consideration raised to explain the appeal of a certain strategy; the second is a consideration raised to call into question the wisdom of adopting that strategy. C. The first is an assumption that has been used to justify a certain strategy; the second is a consideration that is used to cast doubt on that assumption. D. The first is a consideration raised in support of a strategy the argument endorses; the second presents grounds in support of that consideration. E. The first is a consideration raised to show that adopting a certain strategy is unlikely to achieve the intended effect; the second is presented to explain the appeal of that strategy. ------------------------------------------------------------------------------------------------------------ Q4 to Q6: The fields of antebellum (pre-Civil War) political history and women’s his- tory use separate sources and focus Line on separate issues. Political histori- ThiNganHang.com
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(5) ans, examining sources such as voting records, newspapers, and politicians’ writings, focus on the emergence in the 1840’s of a new “American political nation,” and since women were neither (10) voters nor politicians, they receive little discussion. Women’s historians, mean- while, have shown little interest in the subject of party politics, instead draw- ing on personal papers, legal records (15) such as wills, and records of female associations to illuminate women’s domestic lives, their moral reform activities, and the emergence of the woman’s rights movement. (20) However, most historians have underestimated the extent and signifi- cance of women’s political allegiance in the antebellum period. For example, in the presidential election campaigns (25) of the 1840’s, the Virginia Whig party strove to win the allegiance of Virginia’s women by inviting them to rallies and speeches. According to Whig propa- ganda, women who turned out at the (30) party’s rallies gathered information that enabled them to mold party-loyal families, reminded men of moral values that transcended party loyalty, and con- ferred moral standing on the party. (35) Virginia Democrats, in response, began to make similar appeals to women as well. By the mid-1850’s the inclusion of women in the rituals of party politics had become common- (40) place, and the ideology that justified such inclusion had been assimilated by the Democrats. -------------------------------------------------------------------------------- Q4: The primary purpose of the passage as a whole is to A. examine the tactics of antebellum political parties with regard to women B. trace the effect of politics on the emergence of the woman’s rights movement C. point out a deficiency in the study of a particular historical period D. discuss the ideologies of opposing antebellum political parties ThiNganHang.com
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E. contrast the methodologies in two differing fields of historical inquiry -------------------------------------------------------------------------------- Q5: According to the second paragraph of the passage (lines 20-42), Whig propaganda included the assertion that A. women should enjoy more political rights than they did B. women were the most important influences on political attitudes within a family C. women’s reform activities reminded men of important moral values D. women’s demonstrations at rallies would influence men’s voting behavior E. women’s presence at rallies would enhance the moral standing of the party -------------------------------------------------------------------------------- Q6: According to the passage, which of the following was true of Virginia Democrats in the mid-1850’s? A. They feared that their party was losing its strong moral foundation. B. They believed that the Whigs’ inclusion of women in party politics had led to the Whigs’ success in many elections. C. They created an ideology that justified the inclusion of women in party politics. D. They wanted to demonstrate that they were in support of the woman’s rights movement. E. They imitated the Whigs’ efforts to include women in the rituals of party politics. ------------------------------------------------------------------------------------------------------------ Q7: A recent review of pay scales indicates that CEO’s now earn an average of 419 times more pay than blue-collar workers, compared to a ratio of 42 times in 1980. A. that CEO’s now earn an average of 419 times more pay than blue-collar workers, compared to a ratio of 42 times B. that, on average, CEO’s now earn 419 times the pay of blue-collar workers, a ratio that compares to 42 times C. that, on average, CEO’s now earn 419 times the pay of blue-collar workers, as compared to 42 times their pay, the ratio D. CEO’s who now earn on average 419 times more pay than blue-collar workers, as compared to 42 times their pay, the ratio E. CEO’s now earning an average of 419 times the pay of blue-collar workers, compared to the ratio of 42 times ------------------------------------------------------------------------------------------------------------ Q8: ThiNganHang.com
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The 32 species that make up the dolphin family are closely related to whales and in fact include the animal known as the killer whale, which can grow to be 30 feet long and is famous for its aggressive hunting pods. A. include the animal known as the killer whale, which can grow to be 30 feet long and is B. include the animal known as the killer whale, growing as big as 30 feet long and C. include the animal known as the killer whale, growing up to 30 feet long and being D. include the animal known as the killer whale, which can grow as big as 30 feet long and is E. include the animal known as the killer whale, which can grow to be 30 feet long and it is ------------------------------------------------------------------------------------------------------------ Q9 to Q12: Over the last 150 years, large stretches of salmon habitat have been eliminated by human activity: Line mining, livestock grazing, timber (5) harvesting, and agriculture as well as recreational and urban devel- opment. The numerical effect is obvious: there are fewer salmon in degraded regions than in pris- (10) tine ones; however, habitat loss also has the potential to reduce genetic diversity. This is most evident in cases where it results in the extinction of entire salmon (15) populations. Indeed, most analysts believe that some kind of environmental degradation underlies the demise of many extinct salmon populations. (20) Although some rivers have been recolonized, the unique genes of the original populations have been lost. Large-scale disturbances in (25) one locale also have the potential to alter the genetic structure of populations in neighboring areas, even if those areas have pristine habitats. Why? Although the (30) homing instinct of salmon to their ThiNganHang.com
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natal stream is strong, a fraction of the fish returning from the sea (rarely more than 15 percent) stray and spawn in nearby (35) streams. Low levels of straying are crucial, since the process provides a source of novel genes and a mechanism by which a location can be (40) repopulated should the fish there disappear. Yet high rates of straying can be problematic because misdirected fish may interbreed with the existing stock (45) to such a degree that any local adaptations that are present become diluted. Straying rates remain relatively low when environmental conditions are (50) stable, but can increase dramati- cally when streams suffer severe disturbance. The 1980 volcanic eruption of Mount Saint Helens, for example, sent mud and debris (55) into several tributaries of the Columbia River. For the next couple of years, steelhead trout (a species included among the salmonids) returning from the (60) sea to spawn were forced to find alternative streams. As a consequence, their rates of straying, initially 16 percent, rose to more than 40 percent (65) overall. Although no one has quantified changes in the rate of straying as a result of the disturbances caused by humans, there is no (70) reason to suspect that the effect would be qualitatively different than what was seen in the aftermath of the Mount Saint Helens eruption. Such a dra- (75) matic increase in straying from damaged areas to more pristine ThiNganHang.com
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streams results in substantial gene flow, which can in turn lower the overall fitness of subsequent generations. -------------------------------------------------------------------------------- Q9: The primary purpose of the passage is to A. argue against a conventional explanation for the extinction of certain salmon populations and suggest an alternative B. correct a common misunderstanding about the behavior of salmon in response to environmental degradation caused by human activity C. compare the effects of human activity on salmon populations with the effects of natural disturbances on salmon populations D. differentiate the particular effects of various human activities on salmon habitats E. describe how environmental degradation can cause changes in salmon populations that extend beyond a numerical reduction -------------------------------------------------------------------------------- Q10: It can be inferred from the passage that the occasional failure of some salmon to return to their natal streams in order to spawn provides a mechanism by which A. pristine streams that are near polluted streams become polluted themselves B. the particular adaptations of a polluted stream’s salmon population can be preserved without dilution C. the number of salmon in pristine habitats decreases relative to the number in polluted streams D. an environmentally degraded stream could be recolonized by new salmon populations should the stream recover E. the extinction of the salmon populations that spawn in polluted streams is accelerated -------------------------------------------------------------------------------- Q11: According to the passage, human activity has had which of the following effects on salmon populations? A. An increase in the size of salmon populations in some previously polluted rivers B. A decline in the number of salmon in some rivers C. A decrease in the number straying salmon in some rivers D. A decrease in the gene flow between salmon populations that spawn in polluted streams and populations that spawn in pristine streams E. A decline in the vulnerability of some salmon populations to the effects of naturally occurring habitat destruction ThiNganHang.com
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-------------------------------------------------------------------------------- Q12: The author mentions the “aftermath of the Mount Saint Helens eruption” (lines 73-74) most likely in order to A. provide an example of the process that allows the repopulation of rivers whose indigenous salmon population has become extinct B. indicate the extent to which the disturbance of salmon habitat by human activity in one stream might affect the genetic structure of salmon populations elsewhere C. provide a standard of comparison against which the impact of human activity on the gene flow among salmon populations should be measured D. show how salmons’ homing instinct can be impaired as a result of severe environmental degradation of their natal streams E. show why straying rates in salmon populations remain generally low except when spawning streams suffer severe environmental disturbance ------------------------------------------------------------------------------------------------------------ Q13: In the United States, of the people who moved from one state to another when they retired, the percentage who retired to Florida has decreased by three percentage points over the past ten years. Since many local businesses in Florida cater to retirees, this decline is likely to have a noticeably negative economic effect on these businesses. Which of the following, if true, most seriously weakens the argument? A. Florida attracts more people who move from one state to another when they retire than does any other state. B. The number of people who move out of Florida to accept employment in other states has increased over the past ten years. C. There are far more local businesses in Florida that cater to tourists than there are local businesses that cater to retirees. D. The total number of people who retired and moved to another state for their retirement has increased significantly over the past ten years. E. The number of people who left Florida when they retired to live in another state was greater last year than it was ten years ago. ------------------------------------------------------------------------------------------------------------ Q14: That the application of new technology can increase the productivity of existing coal mines is demonstrated by the case of Tribnia’s coal industry. Coal output per miner in Tribnia is double what it was five years ago, even though no new mines have opened. Which of the following can be properly concluded from the statement about coal output per miner in the passage? ThiNganHang.com
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A. If the number of miners working in Tribnian coal mines has remained constant in the past five years, Tribnia’s total coal production has doubled in that period of time. B. Any individual Tribnian coal mine that achieved an increase in overall output in the past five years has also experienced an increase in output per miner. C. If any new coal mines had opened in Tribnia in the past five years, then the increase in output per miner would have been even greater than it actually was. D. If any individual Tribnian coal mine has not increased its output per miner in the past five years, then that mine’s overall output has declined or remained constant. E. In Tribnia the cost of producing a given quantity of coal has declined over the past five years. ------------------------------------------------------------------------------------------------------------ Q15: In parts of South America, vitamin-A deficiency is a serious health problem, especially among children. In one region, agriculturists are attempting to improve nutrition by encouraging farmers to plant a new variety of sweet potato called SPK004 that is rich in beta-carotene, which the body converts into vitamin A. The plan has good chances of success, since sweet potato is a staple of the region’s diet and agriculture, and the varieties currently grown contain little beta-carotene. Which of the following, if true, most strongly supports the prediction that the plan will succeed? A. The growing conditions required by the varieties of sweet potato currently cultivated in the region are conditions in which SPK004 can flourish. B. The flesh of SPK004 differs from that of the currently cultivated sweet potatoes in color and texture, so traditional foods would look somewhat different when prepared from SPK004. C. There are no other varieties of sweet potato that are significantly richer in beta- carotene than SPK004 is. D. The varieties of sweet potato currently cultivated in the region contain some important nutrients that are lacking in SPK004. E. There are other vegetables currently grown in the region that contain more beta- carotene than the currently cultivated varieties of sweet potato do. ------------------------------------------------------------------------------------------------------------ Q16: Soaring television costs accounted for more than half the spending in the presidential campaign of 1992, a greater proportion than it was in any previous election. A. a greater proportion than it was B. a greater proportion than C. a greater proportion than they have been D. which is greater than was so E. which is greater than it has been ThiNganHang.com
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