GRE专项试题

2020-06-20试题

  8.Scientist:More than 1, 000 large asteroids regularly

  cross the Earth’s path.Even though the probabil-

  ity of one colliding with the Earth is extremely

  slight, we should do whatever we can to reduce

  that probability since any such collision would

  be catastrophic.The best way to avoid such a

  disaster is to deflect the asteroids.The only

  known way of deflecting asteroids is by hitting

  them with nuclear weapons that would be stored

  in space stations.

  The scientist’s claims are structured so as to lead to

  which of the following conclusions?

  (A)Nuclear technology is the only technology that

  can plausibly be used to prevent natural

  catastrophes.

  (B)Nuclear weapons should be deployed in space.

  (C)No catastrophe has yet been caused by the

  collision of an asteroid with the Earth.

  (D)The 1, 000 large asteroids that cross the Earth’s

  path pose only an extremely slight risk of

  colliding with the Earth.

  (E)There is currently no acceptable use to which

  nuclear weapons can be put, aside from pro-

  tecting the Earth from asteroids.

  9.It has long been thought that high levels of the hor-

  mone testosterone contribute to the onset of heart

  disease in men.However, this view cannot be correct,

  since men who have heart disease typically show

  significantly lower levels of testosterone than do men

  who have not had heart disease.

  The argument above assumes which of the following?

  (A)Many men who have never had heart disease

  have unusually low levels of testosterone.

  (B)Having heart disease does not significantly lower

  the level of testosterone in men.

  (C)Levels of hormones other than testosterone

  significantly affect the likelihood that a man

  will develop heart disease.

  (D)Heart disease and lowered testosterone levels in

  men are the effects of a single common cause.

  (E)High levels of testosterone have never been

  thought to contribute to a serious disease other

  than heart disease

  10.The time-out technique involves removing the child from

  an undesirable situation in order to let the child think

  things over.Over the last two decades, family doctors

  have been advocating this technique as preferable to

  spanking, which is now known to be potentially injurious

  and no more effective.

  10.Which of the following can properly be concluded

  from the data presented in the graph?

  (A)The 1962 survey was based on a larger sample

  than the 1992 survey was.

  (B)In the period between the surveys, denying tele-

  vision privileges was never the disciplinary

  technique most popular with parents.

  (C)The four disciplinary techniques featured in the

  graph were the only disciplinary techniques

  named by parents in either survey.

  (D)The 1962 survey allowed parents to name more

  than one disciplinary technique, but the 1992

  survey may not have allowed this.

  (E)In the period between the surveys, there were

  no significant changes in the popularity of lec-

  turing children as a disciplinary method.

  11.People who engage in scuba diving are healthier, on

  average, than people who do not engage in this

  activity.Therefore, scuba diving tends to promote

  improved health.

  The argument is most vulnerable to criticism on the

  grounds that it

  (A)presupposes that everyone who takes up scuba

  diving does so solely for health reasons

  (B)leads to a further and falsifiable conclusion that

  no one can achieve good health without

  engaging in scuba diving

  (C)fails to point out that a small number of people

  are seriously injured in scuba diving accidents

  each year

  (D)treats a precondition for improving one’s health

  as though it were something that by itself

  could ensure good health

  (E)overlooks the possibility that people generally do

  not take up scuba diving unless they are in

  good health

  Questions 12-15

  An art museum owns six paintings by an eighteenth-

  century painter.The paintings, listed in order by esti-

  mated value from lowest to highest, are F, G, H, S, T,

  and U.Paintings F, G, and H are landscapes; S, T, and U

  are portraits.At any one time, exactly three of the six

  paintings are on exhibit, subject to the following

  restrictions:

  The paintings on exhibit cannot all be landscapes.

  If the exhibit includes only one portrait, that portrait

  must be U.

  H cannot be on exhibit at any time that T is on exhibit.

  12.Which of the following could be the three paintings

  on exhibit at some point?

  (A)F, G, and H

  (B)F, G, and T

  (C)G, H, and S

  (D)G, S, and U

  (E)H, T, and U

  13.Which of the following, if they are the first two

  paintings selected for inclusion in a future exhibit,

  leave the widest choice of paintings for the third

  painting in that future exhibit?

  (A)F and G

  (B)G and H

  (C)H and U

  (D)S and T

  (E)S and U

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