Questions 16-22
In a first aid course, exactly five training films-R, S, T, U, and V-are to the shown. The films can be shown in any order that conforms to the following restrictions:
R must be shown earlier than T.
S must be shown earlier than U.
V must not be shown fifth.
16. Which of the following is an acceptable order for showing the training film?
(A) R, T, S, U, V
(B) R, T, U, V, S
(C) S, U, T, R, V
(D) S, U, V, R, T
(E) V, S, T, R, U
17. If T is shown earlier than V, which of the following must be true?
(A) R is shown first.
(B) S is shown second.
(C) T is shown third.
(D) U is shown fifth.
(E) V is shown fourth.
18. If U is to be shown earlier than R is shown, then for which of the following is there exactly one position from fist through fifth in which it can be scheduled to be shown?
(A) R
(B) S
(C) T
(D) U
(E) V
19. Which of the following is a pair of films that CANNOT both be shown earlier than V?
(A) R and S
(B) R and U
(C) S and T
(D) S and U
(E) T and U
20. If U and V are shown as far apart from each other as possible, which of the following must be true?
(A) R is shown earlier than S.
(B) S is shown earlier than T.
(C) T is shown earlier than V.
(D) U is shown earlier than R.
(E) V is shown earlier than S.
21. If S, U, and V are to be shown one directly after the other in the order given, the two positions from first to fifth in which R could possibly be shown are
(A) first and second
(B) first and fourth
(C) second and third
(D) third and fifth
(E) fourth and fifth
22. If exactly one film is shown between R and T, and exactly one film is shown between S and U, which of the following must be true?
(A) S is the film shown between R and T.
(B) T is the film shown between S and U.
(C) V is the film shown between R and T.
(D) U is the last film shown.
(E) V is the first film shown.
23. Jet fighters have recently been equipped with electronics improvements enabling the pilot to shoot down an enemy plane while still out of sight. There is, however, the following problem: there is no sure way of determining whether a plane that is out of sight is friend or foe.
Which of the following products suffers from a drawback that, in its logical features, is most like the problem described above?
(A) A fire alarm system with such a high heat and smoke threshold that it is likely to react too late to a developing fire
(B) An improved electronic ignition system whose superiority is limited to those rare times when it is perfectly adjusted
(C) A product marketed as a weedkiller that kills all plants to which it is applied before they resume active growth in the spring
(D) A jar lid designed to be childproof that children have little difficulty removing
(E) A cold medicine that relieves most symptoms of the common cold but also causes spells of dizziness
24. As a tool for public health policy, the epidemiological study of disease has one major advantage over experiments studying the effects of toxic substances on animals: there is never any call for extrapolating inferences across species in epidemiology.
Which of the following can be inferred from the passage above?
(A) In epidemiology, extrapolating inferences across species is only an auxiliary tool.
(B) Epidemiology is a very precise science.
(C) In epidemiology, human populations are studied directly.
(D) Toxicological experimentation on animals is more expensive than are epidemiological studies.
(E) Toxicological experimentation on animals yields results less quickly than do epidemiological studies.
25. According to a recent historical study, capital punishment deters murder only during weeks when well-publicized executions take place. During such weeks, homicides fall to a level below average. The yearly murder rate, how- ever, is not affected by the number of well- publicized executions.
If the above passage is true, which of the following statements must also the true?
(A) In the period studied, the number of well- publicized executions remained virtually the same from year to year.
(B) For at least one week during any years in which there were well-publicized executions, murder rates were above average.
(C) During some weeks of each year of the study, an extraordinary number of public executions took place.
(D) In the past, newspapers considered capital punishment important news and devoted extensive coverage to all executions.
(E) Many executions that took place during the period studied were not reported objectively by the media. |
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