(D) The animal and plant life destroyed by forest fires seldom represents endangered species.
(E) Study of tree tissues indicates that forest fires were a regular occurrence in the times preceding human occupation of forest areas.
10. The dinosaurs may have been destroyed when the Earth was struck by a huge meteorite whose impact threw a mass of pulverized meteorite debris into the atmosphere. This dust cut off sunlight, so depleting plant life that the plant-eating dinosaurs perished; the meat-eating dinosaurs, who preyed on the plant-eaters, then starved to death.
Which of the following, if true, best supports the theory above?
(A) Modern volcanic explosions have sent enough dust into the atmosphere to change the color of sunsets around the world for several years.
(B) Meteorite craters are abundant in several areas of the Southwest where numerous dinosaur fossils have also been found.
(C) Recent studies of bone structure suggest that dinosaurs were quite agile beasts rather than the ponderous, awkward animals they were once thought to be.
(D) The Earth's sedimentary rock strata that were formed from atmospheric dust at the time the dinosaurs vanished contain minerals and other trace elements in proportions characteristic of meteorites.
(E) Several meat-and plant-eating species of mammals that coexisted with the dinosaurs continue to exist today, although their appearance is considerably modified.
Questions 11-15
Wilson is a corporate officer who must take a trip to conduct surprise inspections of production operations at plants in various cities. On her trip she must visit at least three of the corporation's five plants, which are located in Atlanta, Boston, Chicago, Denver, and El Paso. Her trip must be planned according to the following restrictions:
She can visit a city only once on the trip.
She cannot visit both Atlanta and Chicago.
Her first visit must be to Atlanta or Denver.
Her last visit must be to Boston or Denver.
If she visits both Boston and EI Paso, she must visit Boston before she visits EI Paso.
11. Which of the following travel plans, each of which lists cities in the order in which Wilson would visit them, conforms to the restrictions imposed on her trip?
(A) Atlanta, Denver, Boston
(B) Chicago, Boston, EI Paso
(C) Atlanta, EI Paso, Boston, Denver
(D) Boston, EI Paso, Atlanta, Denver
(E) Atlanta, Boston, Chicago, EI Paso, Denver
12. Wilson must visit which of the following cities?
(A) Atlanta
(B) Boston
(C) Chicago
(D) Denver
(E) EI Paso
13. If Wilson visits Atlanta first, which of the following is a complete and accurate list of the cities that she could visit second?
(A) Boston
(B) Denver
(C) Boston, Denver
(D) Denver, EI Paso
(E) Boston, Denver, EI Paso
14. If Wilson visits Chicago, which of the following statements must be true?
Ⅰ. She visits Denver first.
Ⅱ. She visits Chicago second.
Ⅲ. She visits Boston last.
(A) Ⅰonly
(B) Ⅲonly
(C) Ⅰand Ⅱonly
(D) Ⅱand Ⅲ only
(E) Ⅰ,Ⅱ, and Ⅲ
15. Wilson's trip CANNOT include which of the following?
(A) Visits to all of the five cities except Chicago
(B) Visits to all of the five cities except Atlanta
(C) A visit to Boston before a visit to Denver
(D) A visit to Atlanta before a visit to EI Paso
(E) A visit to Atlanta before a visit to Denver
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
16. If X stands on V's shoulder, and M and W stand side by side on the same level as one another, which of the following is a possible arrangement for the second level?
(A) V, M, W
(B) V, W, M
(C) X, M, W
(D) Y, N, Z
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