The passage suggests that self-regulation would fail if which of the following were to occur in a stock exchange?
According to the passage, which of the following will occur if, in the absence of government regulation, a stock exchange fails to curb abuses by its members?
It can be inferred from the passage that the author believes which of the following about stock exchanges?
The passage suggests which of the following about the lament discussed in the highlighted text?
Which of the following is mentioned in the passage as an important component of Warao lamentations?
The passage suggests all of the following about Warao mourning lamentations EXCEPT:
Which of the following best states the main idea of the passage?
According to the passage, the post-Second World War studies that altered the prevailing view of the Black Death involved which of the following?
The "silver lining to the Black Death" (the underline text) refers to which of the following?
The passage suggests that Twigg believes that rats could not have spread the Black Death unless which of the following were true?
The author's attitude toward Twigg's work is best characterized as which of the following?
In an effort to combat three consecutive years of boll weevil infestations, cotton farmers have started using Eradicon, a chemical just released to market, capable of emitting an odor that effectively repels the boll weevil. The agricultural board expects that cotton production on those farms using Eradicon will return to levels similar to those from three years ago.
Which of the following, if true, does the most to weaken the agricultural board's expectations?
A pharmacy is closed between 12:00 and 12:45 each weekday for a lunch break. A decision has been made to change the break time to 12:30 to 1:15 in the belief that this will increase productivity, as measured by the number of prescriptions that are filled daily.
Which of the following, if true, provides the best reason for this belief?
Rheumatic fever is the most serious complication of streptococcal infection, but rheumatic fever is not itself an infection. Rheumatic fever occurs only when, in defending against streptococcal infection, the body's immunological system produces antibodies that also attack the cells of the heart and kidneys.
Which of the following, if true, would contribute most to an explanation of why only streptococcal bacteria give rise to rheumatic fever?
Years ago gardeners who grew water plants sometimes dumped their excess water hyacinths in rivers and streams. Since the water hyacinth is highly invasive, this dumping resulted in rapid spread of these plants in areas outside their native range. Clearly, the water hyacinth would not now be a nuisance in these areas had gardeners disposed of their excess plants more responsibly.
Which of the following, if true, most seriously weakens the argument above?
In malaria-infested areas, many children tend to suffer several bouts of malaria before becoming immune to the disease. Clearly, what must be happening is that those children's immune systems are only weakly stimulated by a any single exposure to the malarial parasite and need to be challenged several times to produce an effective immune response.
Which of the following, if true, most seriously undermines the explanatory hypothesis?
Which one of the following selections, if true, points out the most critical weakness in the method used by the author to investigate birth order characteristics?
In developed countries, such as the United States, the percentage of the population diagnosed with clinical depression is much greater than that in developing countries. Researchers hypothesize that this difference is due to the increased leisure time afforded to residents of developed countries.
The hypothesis of the researchers depends on which of the following assumptions?
Since the invention of digital readout, machine designers have rushed to replace conventional dials and gauges with digital units. Yet the digital gauge has drawbacks in some situations. Since it presents an exact numeric value, it must be decoded and analyzed by a human operator; its meaning cannot be read in an instantaneous scanning. An analog dial or gauge can be marked with red to alert the operator when a value is entering a danger zone; a digital gauge cannot. And it is difficult to tell whether a digital readout is increasing or decreasing over time, while the up or down movement of a pointer on an analog gauge can be quickly and easily observed.
The author of the passage above would probably recommend the use of digital gauge in cases when
I. warning of a sudden rise or fall in value is needed
II. an operator must read and interpret several gauges within a few seconds
III. a precise numeric value is essential
Analyst: In our nation's television news programs, the number of stories aired about armed conflicts in Africa was much lower last year than it had been previously. Many armed conflicts have been fully or partly resolved with ceasefire agreements, and others have lessened in intensity due to the fatigue of the combating forces, so it is probably that the low number of articles is due to a decline in armed conflict in Africa.
Which of the following, if true, most seriously undermines the analyst's argument?
Natural gas was recently discovered in the economically depressed Region Y, and the Fonidol company has drilled a number of wells there. Subsequently, the water in local residents' water supply became somewhat murky. It is likely that the gas extraction process is in part the cause of this, since extraction involves pumping out large quantities of groundwater. However, very few of the affected residents have complained to authorities about the water quality.
Which of the following, if true, would most help to explain why the residents did not complain to the authorities?
It is not uncommon for close synonyms to be understood to share the same meaning. The difference between words like hard and difficult, for example, goes tragically unnoticed. One may employ one or the other with complete indifference, postulating no discrepancy between them. In general, this is well and good; most people lack the scrupulous pedanticalness to quibble over such trifles. Nevertheless, for those people with ample compulsiveness (and time), it is of significant value to comprehend such nuances.
In the argument given, the two portions in boldface play which of the following roles?