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As a result of a chemical reaction between compounds A and B. $$\frac{1}{4}$$ of each compound was transformed into an equal amount of the other compound, while the remaining $$\frac{3}{4}$$ of each compound was not transformed. If the amount of B was initially 4 times the amount of A. what was the ratio of the amount of A to the amount of B after the reaction?
Suppose a, b, c are different integers, and the repeating decimal $$0.\overline{abc}$$=$$\frac{m}{n}$$, where 0 < m < n < 100 and both m and n are positive integers, then

Quantity A

n

Quantity B

39


If c < b < a < 0, which of the following is equal to |a-b-c|-|b+c|?
All the chairs in a certain cargo have the same weight, and all the tables in the cargo have the same weight. There are 6 times as many chairs as there are tables. The weight of each table is 9 times the weight of each chair. If the total weight of the tables is 1,200 kilograms, then the total combined weight of the chairs and tables is how many kilograms?
For a certain type of can, the number of grams of aluminum per can decreased by 20 percent from 1994 to 1998, while the cost per gram of aluminum decreased by 60 percent. If the cost of the aluminum in y cans in 1994 was equal to the cost of aluminum in ky cans in 1998, then k=?
When (5n+1) is divided by 3 and 4, the remainder is 2 and 1, respectively.

Quantity A

n

Quantity B

3


Many leading photographers have begun to produce work specifically for galleries and museums, and therefore, not surprisingly, they now regard the long-standing question of whether photography really (i)________ art to be (ii)________.
Every few years, as a reviewer, one encounters a novel whose (i)________ are so many in number, and so (ii)_______ that to correct them fully would produce a text that exceeded the novel itself in length. Faced with such a book. one wishes only to let it slip quietly to the seabed of culture, there to join thousands of other (iii)________ books in their slow disintegration
Recently, controversial findings were released that suggest that the amount of carbon dioxide absorbed by United States forests might be greater than the amount emitted by the nation's fossil-fuel combustion. This conclusion has two astonishing implications. First, the United States may not be directly contributing to rising atmospheric levels of carbon dioxide. Second, the atmosphere seems to be benefiting from young forests, which are particularly efficient at absorbing carbon dioxide. But these young forests exist only because old-growth forests were clear-cut in earlier centuries. The possibility that the United States absorbs more carbon dioxide than it produces thus does not reflect efforts to protect the environment; rather, it reflects a history of deforestation and development.
Which of the following, if true, would most weaken the author's argument that the ability of the United States to absorb more carbon dioxide than it produces is not a result of efforts to protect the environment?
It can be inferred from the passage that the author assumes which of the following about United States carbon dioxide emissions?
Looking back on a project that they had approached with both great________ and considerable aspirations, they were amused to recognize that neither the fears nor the hopes had been at all realistic.
Recent discoveries suggest that mathematical techniques developed by ancient Babylonian astronomers________ those of medieval European scholars: Babylonian trapezoid procedures can be viewed as a concrete example of graphical methods devised by fourteenth-century philosopher Nicole Oresme.
Which of the following would it be most useful to establish in order to evaluate the argument?
Few topics engender more controversy among musicologists than the "authentic" performance of music of earlier periods. At issue are claims made by partisans of the early music movement that their performances represent a re-creation of history and that the historical information on which such performances are based provide a sure foundation for performances that accurately reflect the composer's original intentions. Taruskin has been the most powerful critic of this view, arguing that so-called authentic performances do not reveal any concrete truth of how the music of earlier times "should" sound. Instead, these performances reflect our contemporary taste for this repertoire's sound and offer a twentieth-century interpretation that, while based on certain historical facts, is encumbered with the unconscious biases inherent in any interpretive endeavor.

Yet, despite their flaws, historical investigations and interpretations remain an indispensable part of music scholarship. Indeed, Taruskin is not engaged in a wholesale crusade against the early music movement or against performance-practice research; rather, he is calling for intellectual honesty. His arguments are important because they help clarify the thin line between historical facts, on the one hand, and, on the other, musical interpretations based not only on those facts but also on imaginative, well-founded speculation.
The passage suggests that Taruskin would probably agree with which of the following criticisms regarding the partisans of the early music movement?

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