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The decline and fall of the Roman Empire remains a topic of vigorous debate to this day; historians have attributed it to a variety of causes, including military insurrection, ethnic conflict, and widespread immorality.

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题目： In a certain region, the number of children who have been vaccinated against rubella is twice the number who have been vaccinated against mumps. The number who have been vaccinated against both is twice the number who have been vaccinated only against mumps. If 5,000 have been vaccinated against both, how many have been vaccinated only against rubella?

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题目： If $$m > 0$$ and $$n > 0$$, is $$\frac{m+x}{n+x} >\frac m n$$(1)$${m}<{n}$$(2)$$x >0$$

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题目： A wildlife expert predicts that the reintroduction of the caribou into northern Minnesota would fail if the density of the timber wolf population in that region is more numerous than one wolf for every 39 square miles.

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题目： The total value of Class A common shares to be offered to the public on May 18, 2012 at $38 per share is most closest to:

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题目： For each of the following statements, select Yes if, from the information provided, it can be shown that the statement is true. Otherwise, select No.

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题目： This is a Time VS QoQ Rate of Growth chart for Facebook between June 2009 and April 2012 - just before its IPO in May 2012. The dotted line shows actual data while the smooth line shows an estimated regression of those data points.Choose the appropriate drop down that best fills in the sentence with accurate information about the graph.A) The quarter over quarter growth rate took[s[0]]months to fall from the 10%-15% range down to the 5%-10% range.B) The graph shows there tends to be a seasonal effect on the decline of Facebook's rate of growth during the time period shown. [s[1]]

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题目： Is $${x}^{2}+{y}^{2} >{6}$$?(1)$$({x}+{y})^{2} >{6}$$(2)$$xy = 2$$

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题目： If $${{1}\over{x+2}}={{1}\over{x-2}}+{{1}\over{x+1}}$$, which of the following is a possible value of x?

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题目： How many seconds will it take for a car that is traveling at a constant rate of 45 miles per hour to travel a distance of 220 yards? (1 mile = 1,760 yards)

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题目： If I and k are lines in the xy-plane, is the product of the slopes of I and k equal to -1 ?(1)Line I passes through the origin and the point (1, 2).(2)Line k has x-intercept 4 and y-intercept 2.

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题目： p is an integer; n is an integer; and $$\frac p n$$ is an integer. Is $$\frac p n$$ odd?(1)p is divisible by 4.(2)n is divisible by 4.

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题目： According to the passage, if the researchers had NOT found that two extinct carnivore species were free of tooth breakage, the researchers would have concluded that

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题目： For each of the following statements, select Yes if the statement must be true of a boy selected at random from a model population. Otherwise, select No.

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题目： Adiliah, Bao, Davi, Laszlo, Saleema, and Yarah work in a firm's legal department. A supervises B and D, D supervises L, and L supervises S and Y. these are the only supervisory relationships involving these 6 employees. Each document that the department processes must be initially reviewed by exactly 1 department member. Each document reviewed by a department member must then be reviewed by that person's supervisor. No other rules require anyone else to review any document. Anyone not required to review a given document will not review it.Select L among reviewers for the maximum number of the department members that could have reviewed a single document if L was among the reviewers. Select A among reviewers for the maximum number of department members that could have reviewed a single document if A was among the reviewers. Make only two selections, one in each column.