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5098

In recent years, networks of fiber-optic cable have been replacing electrical wire for transmitting telecommunications signals. Signals running through fiber-optic cables deteriorate, and so the signals must be run through a piece of equipment called a regenerator before being transmitted farther. Light-Line is the leading manufacturer of signal regenerators. Therefore, Light-Line is one of the companies that will most benefit if new long-distance fiber-optic telecommunications networks are constructed.

Which of the following, if true, casts the most doubt on the prediction about Light-Line's prospects?

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Last August the XT chain of gasoline stations had a temporary sales promotion in effect. In the promotion , any customer who made a purchase of ten or more gallons of gasoline was entitled to a free car wash . For the month of August , XT experienced a ten percent increase in gasoline sales as compared to sales in August the previous year so evidently the promotion was successful as a means of boosting sales.

In evaluating the argument , it would be most helpful to answer which of the following ?

5105

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The sense of delayed gratification, of working now for later pleasure, has helped shape the economic behavior of our society. However, that sense is no longer nurtured as consistently in our children as it once was. For example, it used to take a bit of patience to put together the toys that children got in cereal boxes; now the toys come from the boxes whole.

Which of the following is an assumption of the passage above?

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The author mentions the "aftermath of the Mount Saint Helens eruption" most likely in order to

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According to the passage, the periodic behavior displayed by commuter diatoms under constant laboratory conditions is characterized by which of the following?

4988

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From 1980 to 1989, total consumption of fish in the country of Jurania increased by 4.5 percent, and total consumption of poultry products there increased by 9.0 percent. During the same period, the population of Jurania increased by 6 percent, in part due to immigration to Jurania from other countries in the region.

If the statements above are true, which of the following must also be true on the basis of them?

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The primary purpose of the passage is to

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In the context of the passage, the phrase "fossils of a predicted kind" (highlight) most likely refers to which of the following?

5814

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Which of the following is mentioned in the passage as an argument made by scientists who are unconvinced that birds evolved from theropod dinosaurs?

5816

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The primary purpose of the passage is to

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According to the passage, one source of dissatisfaction for Parisian seamstresses after the establishment of the seamstresses' guild was that

5818

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It can be inferred from the passage that which of the following was true of seamstresses employed by relatives who were members of the tailors' guild?

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The author mentions the seamstresses' view of guild membership as a "mark of independence from the patriarchal family" (highlighted text) primarily in order to

1117

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题目： If $$2^{2x – 1} = 8^{y}$$ then x in terms of y equals:

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题目： Lindsay can paint $$\frac{1}{x}$$ of a certain room in one hour. If Lindsay and Joseph, working together at their respective rates, can paint the room in one hour, what fraction of the room can Joseph paint in 20 minutes?

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