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GRE出国考试模拟试题9

留学快车整理  08-06-26 00:00:00 责任编辑:胡敏 我要评论 选校

SECTION 6
Time –30 minutes
25 Questions

1. Soft Drink Manufacturer:Our new children's soft drink, RipeCal, is fortified with calcium.Since calcium is essential for developing healthy bones, drinking RipeCal regularly will help make children healthy.
Consumer Advocate:But RipeCal also contains large amounts of sugar, and regularly consuming large amounts of sugar is unhealthful, especially for children.

In responding to the soft drink manufacturer, the consumer advocate does which of the following?
(A)Challenges the manufacturer's claim about the nutritional value of calcium in children's diets
(B)Argues that the evidence cited by the manufac-turer, when properly considered, leads to a conclusion opposite to that reached by the manufacturer.
(C)Implies that the manufacturer of a product is typically unconcerned with the nutritional value of that product.
(D)Questions whether a substance that is healthful when eaten in moderation can be unhealthful when eaten in excessive amounts.
(E)Presents additional facts that call into question the conclusion drawn by the manufacturer.

2.Over a period of several months, researchers attached small lights to the backs of wetas—flightless insects native to New Zealand—enabling researchers for the first time to make comprehensive observations of the insects' nighttime activities.Thus, since wetas forage only at night, the researchers' observations will significantly improve knowledge of the normal foraging habits of wetas.

Which of the following is an assumption on which the argument depends?
(A) Researchers were interested only in observing the wetas' foraging habits and so did not keeptrack of other types of behavior.
(B) No pattern of behavior that is exhibited by wetas during the nighttime is also exhibited by wetas during the daytime.
(C)Attaching the small lights to the wetas' backs did not greatly alter the wetas' normal night-time foraging habits.
(D)Wetas typically forage more frequently during the months in which the researchers studied them than they do at other times.
(E)The researchers did not use other observational techniques to supplement their method of using small lights to track the nighttime behavior of wetas.

Questions 3-8

On each day of the Monday through Friday workweek, exactly two of three employees—George, Hilda, and Irene—must remain on duty in the office to answer tele-phones during the noon to 1 p.m. lunch break. In the scheduling of telephone duty the following constraints must be met:Hilda and Irene have telephone duty together on Tuesday.George and Hilda have telephone duty together on Thursday. No one can have telephone duty on more than four of the five days of the week.

3.Which of the following can be the week's telephone duty schedule?
Monday Tuesday Wednesday Thursday Friday

(A) George George Hilda George Hilda
Hilda Irene Irene Hilda Irene
(B) George Hilda George Hilda George
Hilda Irene Hilda Irene Irene
(C) George Hilda George George George
Irene Irene Hilda Hilda Hilda
(D) Hilda Hilda George George Hilda
Irene Irene Hilda Hilda Irene
(E) Hilda Hilda George George George
Irene Irene Hilda Irene Irene


4.If Hilda has telephone duty for exactly two days of the week, which of the following must be true?

(A)George and Irene have telephone duty together on Wednesday.
(B)George and Hilda have telephone duty together on Friday.
(C)Hilda and Irene have telephone duty together on Wednesday.
(D)Hilda and Irene have telephone duty together on Friday.
(E)Irene has telephone duty for exactly three days of the week.

5.If Hilda and Irene have telephone duty together on Monday and on Wednesday, which of the following must be true?

(A)George and Hilda have telephone duty together on Friday.
(B)George and Irene have telephone duty together on Friday.
(C)George has telephone duty on exactly three of the days of the week.
(D)Hilda has telephone duty on exactly three of the days of the week.
(E)Irene has telephone duty on exactly three of the days of the week.

6.If George and Hilda have telephone duty together on Monday and George and Irene have telephone duty together on Friday, any of the following can be true EXCEPT:

(A)George and Hilda have telephone duty together on Wednesday.
(B)George and Irene have telephone duty together on Wednesday.
(C)George has telephone duty for four days of the week.
(D)Irene has telephone duty for four days of the week.
(E)Hilda and Irene have telephone duty together for two days of the week.

7.If there is one pair of employees who have telephone duty together for three of the five days, which of the following must be true?

(A)George has telephone duty on Wednesday.
(B)George and Hilda have telephone duty together for three days of the week.
(C)Hilda and Irene have telephone duty together for three days of the week.
(D)One of the three employees has telephone duty for exactly two days of the week.
(E)Exactly one of the workers has telephone duty for exactly three days of the week.

8.Any of the following can be true EXCEPT:

(A)One pair of employees has telephone duty together for exactly one day of the week
(B)One pair of employees has telephone duty together for exactly four days of the week
(C)The pair of employees that has telephone duty together on Monday also has telephone duty together on Wednesday
(D)The pair of employees that has telephone duty together on Tuesday also has telephone duty together on Wednesday
()The pair of employees that has telephone duty together on Thursday also has telephone duty together on Friday

Question 9 is based on the following graph

9.Which of the following, if true, contributes most to an explanation of the change in ice cream sales?

(A)Because of low demand for its transcontinental flights departing from the airport, one airline ceased offering such flights as of December 31,1993.
(B)There were fewer airline passengers who were traveling to destinations outside the United States in January1993 than there were in January1992
(C)The average daily number of passengers at the airport in the month of January was the same for each of the three years
(D)In January 1993 a blizzard forced all flights out of the airport to be canceled for three days, stranding many passengers at the airport.
(E)There were five percent fewer commuter flights scheduled to depart from the airport in January 1993 than there were in January of either 1991 or 1992

10.People whose bodies cannot produce the substance cytochrome P450 are three times as likely to develop Parkinson's disease, a disease that affects the brain, as are people whose bodies do produce this substance.Since cytochrome P450 protects the brain from toxic chemicals, toxic chemicals probably play a role in the development of Parkinson's disease.

Which of the following, if true, most strongly supports the argument?

(A)It will soon be possible for cytochrome P450 to be synthesized for the treatment of people whose bodies cannot produce this substance.
(B)Many people whose bodies are unable to produce cytochrome P450 lack the ability to produce certain other substances as well.
(C)Cytochrome P450 has no effect on the brain other than to protect it from toxic chemicals.
(D)People with Parkinson's disease often exhibit a marked lessening in the severity of their symp-toms when they are treated with dopamine, a chemical produced naturally in the brain.
(E)Many people with Parkinson's disease have the ability to produce cytochrome P450 naturally.

11。The early universe contained only the lightest elements, hydrogen and helium. Heavier elements, such as carbon, form only in nuclear reactions in stars and are dispersed when the stars explode. A recently discovered gas cloud contained carbon several billion years ago, when the universe was no more than two billion years old.

If the statements above are true, which of the following must, on the basis of them, also be true?

(A)The earliest stars contained only hydrogen.
(B)Some stars were formed before the universe was
two billion years old.
(C)The carbon in the gas cloud later formed part of
some stars.
(D)No stars identified to date are as old as the gas
cloud.
(E)The gas cloud also contained hydrogen and
helium.

12 Sleep deprivation is a known cause of workplace error, and many physicians frequently go without sleep for periods of 24 hours or more. However, few of these physicians have, in the course of a routine examination by a peer, been diagnosed with sleep
deprivation.So there is little cause for concern that habitual sleep deprivation will cause widespread physician error.

  The answer to which of the following questions would be most helpful in evaluating the argument?

(A)Do physicians who have been diagnosed with
sleep disorders also show signs of other ills not
related to sleep deprivation?
(B)Is the ability to recognize the symptoms of sleep
deprivation in others significantly impaired by
habitual sleep deprivation?
(C)Do factors other than habitual sleep deprivation
ever lead to errors in the workplace on the part
of physicians?
(D)Of people who have recently been treated by
physicians, what percentage believe that many
physicians have occasionally suffered from sleep
deprivation?
(E)Is the incidence of sleep deprivation higher
among physicians than it is among other health
care workers?

Questions 13-18
In a benefit concert each of exactly seven solo performers—Harris, Jones, McIntyre, Nelson, Strapp, Trevino, and Williams—will sing. The concert director is deciding the order in which the performers will sing and is assigning each to exactly one of seven time slots,
numbered consecutively 1 through 7, according to the following conditions:Harris must sing at some time before McIntyre sings.
Strapp must sing at some time before Jones sings. Trevino must sing either immediately before orimmediately after Nelson sings.
Williams must be assigned to time slot 3.

13.Which of the following could be the order, from first through seventh, in which the performers sing?
(A)Harris, McIntyre, Williams, Trevino, Nelson,
Strapp, Jones
(B)Jones, Harris, Williams, Strapp, McIntyre,
Nelson, Trevino
(C)Strapp, McIntyre, Williams, Nelson, Trevino,
Harris, Jones
(D)Trevino, Harris, Williams, Strapp, Nelson, Jones,
McIntyre
(E)Trevino, Nelson, Harris, Strapp, Williams,
McIntyre, Jones

14.If there are exactly four performers who are to sing after Nelson sings but before Strapp sings, Harris must be assigned to time slot
(A)1
(B)2
(C)4
(D)5
(E)6

15.If Williams is to sing immediately after Harris sings and immediately before Trevino sings, which of the following performers could be assigned to time slot 6?
(A)Harris
(B)Jones
(C)Nelson
(D)Strapp
(E)Trevino

16.If Jones is to sing immediately before Harris sings, which of the following must be assigned to time slot 7?
(A)Harris
(B)Jones
(C)McIntyre
(D)Strapp
(E)Trevino

17.If McIntyre is to sing immediately before Strapp sings, Trevino could be assigned to which of the following time slots?
(A)2
(B)4
(C)5
(D)6
(E)7

18.If McIntyre is assigned to time slot 4, which of the following must be true?
(A)Harris is assigned to a lower-numbered time slot
than Strapp.
(B)Jones is assigned to a lower-numbered time slot
than Trevino.
(C)Nelson is assigned to a lower-numbered time
slot than McIntyre.
(D)Strapp is assigned to a lower-numbered time slot
than Williams.
(E)Trevino is assigned to a lower-numbered time
slot than Jones.

Questions 19-22

Along a street that is currently without trees, seven trees are to be planted in the pattern
1 3 5 7

2 4 6
Where each number designates the position of a tree. No
more than two kinds of trees can be planted. If maples
are used, no maple can be planted adjacent to or immedi-
ately diagonally opposite another maple. Two trees are
adjacent to each other if the numbers of their positions differ by two, and immediately diagonally opposite f their numbers differ by one. The following trees, of three kinds, are available for planting:
Three red oaks
Four maples
Four sycamores

19.Which of the following can be the trees planted along
the side of the street that has four trees, in order of
their positions beginning with position 1?
(A)Maple, sycamore, maple, sycamore
(B)Maple, sycamore, red oak, maple
(C)Red oak, maple, maple, red oak
(D)Sycamore, sycamore, maple, maple
(E)Sycamore, sycamore, red oak, red oak

20.If red oaks are used, then which of the following
must be true?
(A)The other trees used are all maples.
(B)The other trees used are all sycamores.
(C)The red oaks are in positions 1, 2, and 3.
(D)The red oaks are in positions 3, 4, and 5.
(E)The red oaks are in positions 4, 5, and 6.

21.Among the trees left over after the planting is done
there must be
(A)at least one maple
(B)at least one red oak
(C)at least one sycamore
(D)at most one maple
(E)at most one red oak

22.If maples are planted, the side of the street that has
four trees must have
(A)red oaks in positions 1 and 7
(B)red oaks in positions 3 and 5
(C)sycamores in positions 1 and 3
(D)sycamores in positions 1 and 7
(E)sycamores in positions 3 and 5

23.A list of the fifteen operas most frequently performed in recent times includes no works by the nineteenth- century German composer Richard Wagner. lhough music producers tend to produce what audiences want, relative infrequency of performance probably does not indicate lack of popularity in Wagner's case, since Wagner's operas are notoriously expensive to perform on stage.

Which of the following, if true, most strongly supports the conclusion of the argument above?
(A)The list of most frequently performed operas does not include operas produced by small amateur groups.
(B)Some opera companies are backed by patrons who are willing to commit large sums of money in order to enjoy lavish productions.
(C)All of the fifteen most frequently performed operas of recent times are works that have been popular for at least 75 years.
(D)More recordings have been produced recently of the works of Wagner than of the works of anyother composer of opera.
(E)Operatic works of all kinds have been increasing in popularity in recent years.

24.The bodies of dwarf individuals of mammalian species are generally smaller in relation to those of nondwarf individuals than are the teeth of the dwarf individuals in relation to those of the nondwarf indi-viduals. Fragmentary skeletal remains of an adultdwarf woolly mammoth were recently found. The teeth are three-fourths the size of the teeth of an average adult nondwarf woolly mammoth.

The statements above, if true, most strongly support which of the following?
(A)The body of the dwarf woolly mammoth was less than three-fourths the size of the body of an average adult nondwarf woolly mammoth.
(B)None of the teeth of the dwarf woolly mammoth that were recently discovered was as large as any of the teeth of nondwarf woolly mammoths that have been discovered.
(C)The teeth of most adult dwarf individuals of mammalian species are three- fourths the size of the teeth of the adult nondwarf individuals of the same species.
(D)Dwarf woolly mammoths had the same number of teeth as did nondwarf woolly mammoths.
(E)Dwarf individuals of most mammalian species are generally no more than three-fourths the size of the adult nondwarf individuals of those speies.

25.Excluding purchases by businesses, the average amount spent on a factory-new car has risen 30 per-cent in the last five years. In the average household budget, the proportion spent on car purchases has remained unchanged in that period. Therefore theaverage household budget must have increased by 30 percent over the last five years.Which of the following is an assumption on which the argument relies?
(A)The average number of factory-new cars pur-chased per household has remained unchanged over the last five years.
(B)The average amount spent per car by businesses buying factory-new cars has risen 30 percent in the last five years.
(C)The proportion of the average household budget spent on all car-related expenses has remained unchanged over the last five years.
(D)The proportion of the average household budget spent on food and housing has remained unchanged over the last five years.
(E)The total amount spent nationwide on factory-new cars has increased by 30 percent over the last five years.

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