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OG19-数学分册
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If a and bare positive integers, is $$\sqrt[3]{ab}$$ an integer?
(1) $$\sqrt{a}$$ is an integer.
(2) b= $$\sqrt{a}$$
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OG19-数学分册
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Five machines at a certain factory operate at the
same constant rate. If four of these machines,
operating simultaneously, take 30 hours to fill a certain
production order, how many $$\underline{fewer}$$ hours does it take
all five machines, operating simultaneously, to fill the
same production order?
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OG19-数学分册
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A certain toll station on a highway has 7 tollbooths,
and each tollbooth collects $0. 75 from each vehicle
that passes it. From 6 o'clock yesterday morning
to 12 o'clock midnight, vehicles passed each of the
tollbooths at the average rate of 4 vehicles per minute.
Approximately how much money did the toll station
collect during that time period?
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OG19-数学分册
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A certain bridge is 4,024 feet long. Approximately
how many minutes does it take to cross this
bridge at a constant speed of 20 miles per hour?
(1 mile= 5,280 feet)
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OG19-数学分册
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If $$x^{2} - 2x - 15 = 0$$ and $$ x > 0$$ which of the following
must be equal to 0 ?
I. $$x^{2} - 6x +9$$
II. $$x^{2} - 7x +10$$
III. $$x^{2} - 10x +25$$
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OG19-数学分册
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If a square region has area n, what is the length of the
diagonal of the square in terms of n ?
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OG19-数学分册
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If $$a= 1 + \frac{1}{4} + \frac{1}{16} + \frac{1}{64}$$ and $$ b = 1 + \frac{1}{4}a$$, then what is
the value of $$a - b$$ ?
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OG19-数学分册
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If the sum of the reciprocals of two consecutive odd
integers is $$\frac{12}{35}$$ , then the greater of the two integers is
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OG19-数学分册
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The price of a certain stock increased by 0.25 of
1 percent on a certain day. By what fraction did the
price of the stock increase that day?
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OG19-数学分册
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For each trip, a taxicab company charges $4.25 for
the first mile and $2.65 for each additional mile or
fraction thereof. If the total charge for a certain trip
was $62.55, how many miles at most was the trip?
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OG19-语文分册 OG20-语文分册
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The author of the passage is primarily concerned with
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OG19-语文分册 OG20-语文分册
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According to the author of the passage, which of the following is true of the distribution of the income derived from the total output of consumer goods in a modern economy?
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OG19-语文分册 OG20-语文分册
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Which of the following best describes the organization of the passage?
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Arboria is floundering in the global marketplace, incurring devastating losses in market position and profits. The problem is not Arboria's products, but Arboria's trade policy. Arboria faces the prospect of continuing economic loss until Arborian business and political leaders recognize the fundamental differences between Arborian and foreign economic systems. Today the key trade issue is not free trade versus protectionism but diminishing trade versus expanding trade.
Arboria is operating with an obsolete trade policy, an artifact of the mid-1940s when Arboria and Whorfland dominated the global economy, tariffs were the principal obstacle to trade, and Arborian supremacy was uncontested in virtually all industries. In the intervening decades, economic circumstances have shifted radically. Arborian trade policy has not.
Today, Arboria's trade policy seems paralyzed by the relentless conflict between proponents of "free" and "fair" trade. The free traders argue that Arborian markets should be open, and the movement of goods and services across national borders unrestrained. The fair traders assert that access to Arborian markets should be restricted until Arborian businesses are granted equal access to foreign markets. They contend that free trade is impossible while other nations erect barriers to Arborian exports.
Both are correct: fair trade requires equal access and equal access leads to free trade. But both sides base their positions on the same two outdated premises:
1. Global commerce is conducted under the terms of the General Agreement on Tariffs and Trade (GATT) and dominated by Arboria and similar economicsystems abroad.
2. Multilateral negotiations are the most effective way to resolve pressing trade issues.
Both assumptions are wrong. The 40-year-old GATT now covers less than 7 percent of global commerce. World trade is no longer dominated by the freetrade economies; nearly 75 percent is conducted by economic systems operating with principles at odds with those of Arboria. Forging a multilateral trade policy consensus among so many diverse economic systems has become virtually impossible. And while multilateral talks drag on, Arboria misses opportunities for trade expansion.
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OG20 OG2022
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Which of the following best states the difference between free trade and fair trade, as explained in the passage?
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OG20 OG2022
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According to the passage, which of the following was true of the treaty establishing the Fort Berthold Indian Reservation?
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OG20 OG2022
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The passage suggests that, if the criteria discussed in lines 10–20 of the text were the only criteria for establishing a reservation's water rights, which of the following would be true?
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OG20
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Executives at the Fizzles Beverage Company plan to boost profits in Country X on their range of fruit-flavored drinks by introducing new flavors based on tropical fruits that are little known there.The executives reason that since the fruit drinks of other companies have none of these flavors, Fizzles will not have to compete for customers and thus will be able to sell the drinks at a higher price.
Which of the following, if true, presents the most serious potential weakness of the plan?
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OG20 OG2022
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A company that manufactures plastic products from recyclable plastic is, surprisingly,unconcerned that economic conditions may worsen, despite analysts' belief that consumers would then consider ecofriendly plastic products an expensive luxury. But the company reasons that it will be able to lower its prices because,in a weakenedeconomy,other ecofriendly plastic manufacturers are likely to fail.Demand among manufacturers for recyclable plastics as raw materials would then plummet, creating an oversupply of such materials,making them less expensive for the manufacturer to purchase and thus lowering the company's costs.
Which of the following, if true,most weakens the company's reasoning?
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OG20-语文分册
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Super Express Shipping Company has implemented a new distribution system that can get almost every package to its destination the day after it is sent. The company worries that this more efficient system will result in lower sales of its premium next-day delivery service, because its two day service will usually arrive the following day anyway. The company plans to encourage sales of its next-day service by intentionally delaying delivery of its two-day packages so that they will not be delivered the following day, even if the package arrives at its destination city in time for next-day delivery.
The company's plan assumes that
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