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GRE出国考试模拟试题19
SECTION 6
Time –30 minutes
25 Questions
1.Joyce: Three years ago the traffic commission modified our town's busiest intersection for better visibility, a commendable effort to cut down on traffic accidents there.
Gary: Over the past three years there have been more, not fewer, traffic accidents per week at that intersection, so the modification has increased the likelihood of accidents there
The answer to which of the following questions would be most useful in evaluating Gary's argument?
(A) What proportion of the town's drivers involved in accidents that occurred prior to the modification suffered personal injury in their accidents?
(B) How long, on average, had the members of the traffic commission held their offices when the modification was implemented?
(C) Do a majority of the town's residents approve of the traffic commission's overall performance?
(D) What measures have nearby towns taken within the last three years in order to improve visibility at dangerous intersections?
(E) How has the volume of traffic at the town's busiest intersection changed over the last three years?
2. Women make up the majority of the population in the country, and many of the prescriptions written by doctors for tranquilizers are for women patients. The testing of these drugs for efficacy and the calibration of recommended doses, however, was done only on men. Not even the animals used to test toxicity were female.
The statements above, if true, best support which of the following as a conclusion?
(A) Some tranquilizers are more appropriately prescribed for women than for men.
(B) There have been no reports of negative side effects from prescribed tranquilizers in women
(C) Tranquilizers are prescribed for patients in some instances when doctors do not feel confident of their diagnoses.
(D) The toxicity of drugs to women is less than the toxicity of the same drugs to men.
(E) Whether the recommended dosages of tranquilizers are optimal for women is not known.
Questions 3-8
A landscape designer has available two trees each of eight different species—linden, maple, pine, quince, redbud, spruce, tupelo, and walnut—from which a selection must be made for planting at two different locations. For planting at each location, the designer will select exactly four trees, representing four different tree species, according to the following conditions:
If quince is planted at location 1, spruce cannot be planted at location 2.
If linden and quince are planted at location 1, pine must be planted at location 2.
If pine is planted at location 2, quince and tupelo must be planted at location 1.
Spruce cannot be planted at location 1 unless linden and pine are planted at location 2.
3.Which of the following is an acceptable selection of species to be planted at the two locations? Location 1 Location 2
(A) Linden, maple, pine, quince Maple, pine, tupelo, walnut
(B) Linden, pine, quince, walnut Linden, maple, tupelo, walnut
(C) Maple, quince, spruce, tupelo Maple, pine, tupelo, walnut
(D) Quince, spruce, tupelo, walnut Linden, maple, pine, tupelo
(E) Quince, spruce, tupelo, walnut Linden, pine, quince, spruce
4.If maple, spruce, and tupelo are planted at location 1, then which of the following must be the other species planted at location 1?
(A) Quince
(B) Redbud
(C) Spruce
(D) Tupelo
(E) Walnut
5.If maple, redbud, and walnut are planted at location 1, then any of the following species can be planted at location 2 EXCEPT
(A) linden
(B) pine
(C) quince
(D) tupelo
(E) walnut
6.If linden and quince are planted at location 1, then which of the following must be true?
(A) Quince is planted at location 2.
(B) Spruce is planted at location 2.
(C) Pine is not planted at location 1.
(D) Spruce is not planted at location 1.
(E) Tupelo is planted at location 1.
7.If each of the eight species is selected for planting and spruce is planted at location 2, then which of the following must also be planted at location 2?
(A) Linden
(B) Pine
(C) Quince
(D) Tupelo
(E) Walnut
8.If each of the eight species must be selected for planting and quince and tupelo are planted at location 1, then which of the following can be the other two species planted at location 1?
(A) Maple and spruce
(B) Maple and walnut
(C) Pine and redbud
(D) Pine and spruce
(E) Redbud and walnut
