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OG20-语文分册	Ythex has developed a small diesel engine that produces 30 percent less particulate pollution than the engine made by its main rival, Onez, now widely used in Marania; Ythex's engine is well-suited for use in the thriving warehousing businesses in Marania, though it costs more than the Onez engine. The Maranian government plans to ban within the next two years the use of diesel engines with more than 80 percent of current diesel engine particulate emissions in Marania, and Onez will probably not be able to retool its engine to reduce emissions to reach this target. So if the ban is passed, the Ythex engine ought to sell well in Marania after that time. Which of the following is an assumption on which the argument above depends?
Ready4	Buildings $X$ , $Y$ , and $Z$ are a total of $195$ meters tall. If building $X$ is $1\frac{1}{3}$ times as tall as building $Y$ and $\frac{2}{3}$ times as tall as building $Z$ , what is the combined height, in meters, of buildings $Y$ and $Z$ ?
Ready4	Each of the $100$ picture frames in a shipment has one, two, or three hooks. All picture frames with one hook are brown. All picture frames with two or three hooks are black. If one picture frame is selected at random from the shipment, what is the probability that the selected picture frame will have either one or two hooks? (1) The probability the picture frame will be brown plus the probability the picture frame will have two hooks is $0.65$ . (2) The probability the picture frame will be brown minus the probability the picture frame will have two hooks is $0.35$ .
Ready4	A total of $10,000 was invested for one year. Part of this amount earned simple annual interest at the rate of x percent per year, and the rest earned simple annual interest at the rate of y percent per year. If the total interest earned by the $10,000 for that year was $285, what is the value of x? $x = \frac{12 y}{11}$ The ratio of the amount of interest earned at the rate of x percent per year to the amount of interest earned at the rate of y percent per year was 8 to 11.
	Vendor: In Country X, there are several prominent C/N/S fabric manufacturers. Each of these fabric manufacturers develops fabrics in unique combinations in order to product differentiate. The combinations vary in percentages but usually include varying ratios of cotton, nylon, and spandex (C/N/S). We can therefore be able to determine, on the basis of compositional analysis, where the next piece of clothing that we buy from our supplier originally came from. Once we figure that out, we can cut out the supplier and source directly from the original manufacturer. Indicate two different statements as follows: one statement identifies an assumption required by the antique expert's argument and the other identifies a possible fact that, if true, would provide significant logical support for the required assumption.
Ready4	Each of the $50$ ice pops in a box is red, purple, or orange. Cherry and strawberry flavored ice pops are red, grape flavored ice pops are purple, and orange flavored ice pops are orange. If one ice pop is selected at random from the box, what is the probability that the selected ice pop will be grape flavored or orange flavored? (1) The probability that the ice pop will be purple is $0.24$ . (2) The probability that the ice pop will be red is $0.64$ .
Ready4	In 1905 Max Weber published The Protestant Ethic and the Spirit of Capitalism, one of the foundational texts of modern sociology and of economic sociology, in particular, and also one of the first to take an interpretive approach to human participation in social and economic systems. His treatise documents the approaches that peoples of various religious beliefs have taken to labor, leisure, wages, and the moral significance of worldly professions since the advent of the industrial revolution and the development of global capitalism. Weber's work theorizes that the development of novel economic systems is contingent on the Protestant, as opposed to the Catholic, conception of work as inherently virtuous (wherein labor is seen as a theological and an economic imperative). Weber's work can be seen as an early criticism of Karl Marx's entirely materialistic conception of sociological progress, in that he suggests that religious conviction contributed to the development of economic systems and not the other way around. Moreover, Weber was admirably modest in his claims, acknowledging that his was not the definitive understanding of economic development. However, because of the ways social science has developed in the intervening century, Weber's work is more notable as a spur to further inquiry than as an enduring source of scientific truth. Additionally, Weber's thinking was hamstrung by the immaturity of sociological methodology in his time: statistical analysis, data collection, and mathematical economics were all in their theoretical infancy at the time of his writing. Given The Protestant Ethic's scientific obsolescence, it serves as an enduring example of how sociological analysis has changed since its inception and how it continues to do so.
Ready4	If AB is a diameter of the circle above, what is the area of the circle? $B D = 3$ $A C = \frac{2 \sqrt{3}}{3} B D$
Ready4	Set $Y$ contains the elements $\{2, 4, 6, 8\}$ . Which of the following sets has a smaller standard deviation than set $Y$ ? I. $\{22, 24, 26, 28\}$ II. $\{-4, -6, -8, -10\}$ III. $\{0, 2, 4, 6\}$
Ready4	A rectangular framed mirror is shown above. The width of the mirror with the frame is $12$ inches and the frame has uniform width. What are the dimensions of the mirror without the frame? (1) The area of the frame alone is $52$ square inches. (2) The area of the mirror with the frame is $192$ square inches.
Ready4	As understandings of the solar life cycle developed, scientists were confronted by a nagging question: If, early in the history of Earth's planetary formation, the sun was significantly dimmer than it is now, how do we explain evidence for the presence of liquid water on the planet's surface during this period? It is understood that during the early Earth period our sun would have shone at about 70 percent of its current luminosity, significantly below the level necessary to sustain the presence of liquid oceans on the planet's surface. But paleontological and geological records indicate with substantial certainty that liquid water was present on the Earth's surface during this time. If scientific models of solar development and the early geological history of Earth are to be reconciled, there must have been some other, intervening factor affecting surface temperatures during this early period of geologic history. Our method of reconciling these two apparently contradictory bodies of evidence has been to analyze the characteristics and chemical composition of Earth's atmosphere during its various periods of geological development. We have known for decades that the presence of certain vapors in the air, commonly known as “greenhouse gases,” increases the amounts of heat retained by an atmosphere to a degree proportionate to the concentration of greenhouse gases within it. If the Earth was warmer in the past than solar luminosity would suggest—and we have strong evidence that it was—then we can expect that the distribution of greenhouse gases in its atmosphere would be of paramount value in explaining that discrepancy. Heightened greenhouse gas levels would trap and magnify the sun's heat as it struck the atmosphere, enabling liquid water to exist on the surface of Earth. However, we have discovered little evidence that greenhouse gases during the early Earth period were present in larger quantities than previously assumed. These surprising findings indicate that the discrepancy between solar-astronomical and geological evidence related to the development of Earth's oceans cannot be explained by the presence of carbon in the atmosphere. One likely alternative is that another, non-solar source for atmospheric heat during the early Earth period. Earth and its moon were much closer together in the early geologic history of the planet, and tidal heating caused by the moon's rotation around Earth was likely much greater. While it is unclear how much influence this phenomenon might have exerted over atmospheric temperatures, scientists are increasingly convinced that it could play a part in explaining the unlikely presence of liquid water on our infant planet, perhaps in combination with indeterminate geological activity, solar flares, or irregularities in Earth's magnetic field.
Ready4	In the chart shown, which of the following is closest to the median monthly number of customers acquired by Company X?
Ready4	If two different students are to be selected at random from a group of $10$ male and female students, and if $p$ is the probability that one male and one female student will be selected, is $p>\frac{1}{3}$ ? (1) More than $\frac{1}{2}$ of the $10$ students are female. (2) The probability that both students selected will be female is greater than $\frac{1}{3}$ and less than $\frac{1}{2}$ .
Ready4	In the figure above, line segment $FL$ has length 10, and rectangle $HJKL$ is a square. If the area of rectangular region $FGJK$ is 144, what is the area of rectangular region $FGHL$ ?
Ready4	The sequence s₁, s₂, s₃, ...s_n,...,s_n,...is such that s_n $= \frac{1}{n} - \frac{1}{n + 1}$ for all integers $n \geq 1$ . If k is a positive integer, is the sum of the first k terms of the sequence greater than $\frac{9}{10}$ ? (1) $k > 10$ (2) $k < 19$
Ready4	The rectangular quilt shown in the figure above has a border of uniform width. What is the area of the portion of the quilt that excludes the border? (1) The perimeter of the entire quilt is 244 inches. (2) The width of the border on all sides is 3 inches.
	At the Cosquer Cave in France, deep sea divers discovered charcoal prints in the shape of hand stencils, thought to be at least 10,000 years old, on the walls of the undersea cave. Analysis of the prints, which appear in a number of different sizes, showed that they had been made with high-pressure charcoal no denser than that comprising the dense walls of the cave itself. However, scientists were unable to replicate the charcoal prints on the walls of the Cosquer Cave, because small pieces of charcoal from the cave walls do not maintain their consistency underwater and the prints were immediately washed away.Which of the following, if true, would, taken together with the information above, provide the best basis for the claim that the prints were in fact charcoal handprints made by people during the Upper Paleolithic era, which ended 10,000 years ago?
OG15 OG16 OG17	The following appeared in the editorial section of a monthly business newsmagazine:"Most companies would agree that as the risk of physical injury occurring on the job increases, the wages paid to employees should also increase. Hence it makes financial sense for employers to make the workplace safer: they could thus reduce their payroll expenses and save money."Discuss how well reasoned you find this argument. In your discussion be sure to analyze the line of reasoning and the use of evidence in the argument. For example, you may need to consider what questionable assumptions underlie the thinking and what alternative explanations or counterexamples might weaken the conclusion. You can also discuss what sort of evidence would strengthen or refute the argument, what changes in the argument would make it more logically sound, and what, if anything, would help you better evaluate its conclusion.
Ready4	Three copiers $X$ , $Y$ , and $Z$ , working simultaneously and independently at their respective constant rates, can copy a certain document in 6 minutes. How long does it take Copier $Z$ , working alone at its constant rate, to copy the document? (1) Copiers $X$ and $Y$ , working simultaneously and independently at their respective constant rates, can copy the document in 12 minutes. (2) Copiers $X$ and $Z$ , working simultaneously and independently at their respective constant rates, can copy the document in 9 minutes.
Ready4	The rectangular picture shown in the figure above has a frame of uniform width. What is the area of the portion of the picture that excludes the frame? (1) The perimeter of the framed picture is 56 inches. (2) The width of the frame on all sides is 2 inches.