GRE试题五(1)（在线收听）

Time –30 minutes
25 Questions

1. Drug companies lose money when manufacturing
drugs that cure those suffering from rare diseases
because selling a drug to only a few people usually
does not recoup manufacturing expenses．Therefore,
a company manufacturing any of the drugs that cure
those suffering from loxemia, an extremely rare
disease, will undoubtedly lose money．
Which of the following, if true, most seriously
weakens the conclusion above？
(A)Several drugs that cure those suffering from
loxemia also cure those suffering from very
common illnesses．
(B)Most of those who contract loxemia also con-
tract another illness concurrently．
(C)Most of the drug companies that manufacture
drugs that cure rare diseases do not manufac-
ture drugs that cure loxemia．
(D)A sizable number of people are afflicted with
one or another rare disease even though each
rare disease afflicts only a small number of
people．
(E)The larger the amount of a drug that is manu-
factured, the lower the manufacturing expense
for each unit of the drug that is produced．

2.The tomb of a warrior killed in 1501 bears a sculpted
portrait depicting him dressed for battle．Some his-
torians attribute the portrait to an artist from that
century, but of the many references to the tomb in
surviving documents, none that predates the 1800’s
mentions the portrait．The portrait is therefore more
likely the work of a much later artist．
Which of the following, if true, would also support
the conclusion of the argument if substituted for the
evidence given concerning the portrait？
(A)The portrait of the warrior was commissioned by
the family of the warrior’s widow．
(B)References in surviving documents mention that
an artist was paid in 1525 for an unspecified
number of works for the church in which the
tomb is located
(C)The warrior is depicted in the portrait as wearing
boots made of a material not used for boots
until the 1700’s．
(D)Some other art treasures from the church in
which the tomb is located have been reliable
dated to the 1400’s．
(E)The portrait of the warrior on the tomb strongly
resembles a portrait of him known to have
been completed during his lifetime．

Questions 3-7
A florist is designing flower arrangements containing two
or more varieties of flowers selected from among six
varieties of flowers：freesias, irises, lilies, peonies, tulips,
and zinnias．All acceptable arrangements conform to the
following conditions：
If an arrangement contains any freesias, it cannot
contain any zinnias．
If an arrangement contains any tulips, it cannot
contain any zinnias．
If an arrangement contains any peonies, it must also
contain at least one zinnia, and there must be
exactly as many zinnias as peonies．
If an arrangement contains any irises, it must also contain
tulips, and there must be twice as many tulips as irises.
If an arrangement contains freesias, the number of
freesias must be greater than the total number of
other flowers used．

3. Which of the following flower arrangements could be
made acceptable simply by adding a tulip？
(A)Three freesias, one lily, two tulips
(B)Four freesias, two peonies, one tulip
(C)Five freesias, one iris, one tulip
(D)Two irises, two tulips, two zinnias
(E)Two lilies, two peonies, two tulips

4.Which of the following, if added to an unacceptable
flower arrangement consisting of four tulips and two
freesias, would make the arrangement acceptable？
(A)Four freesias
(B)Four irises
(C)Two lilies
(D)Two peonies
(E)Two zinnias
5.Each of the following is a pair of varieties of flowers
that can be used together in an acceptable flower 


arrangement EXCEPT
(A)freesias and irises
(B)freesias and tulips
(C)irises and lilies
(D)irises and peonies
(E)lilies and zinnias

6.Which of the following unacceptable flower arrange-
ments could be made acceptable simply by removing
some or all of the flowers of one variety？
(A)Four freesias, one iris, one lily, one peony
(B)Four freesias, one iris, two tulips, one zinnia
(C)Four freesias, two irises, two tulips, one zinnia
(D)Three freesias, one lily, one peony, two zinnias
(E)Three freesias, two peonies, one tulip, two zinnias

7.If an unacceptable flower arrangement consisting of
four freesias, one lily, one peony, and two tulips is to
be made acceptable by adding or removing only one
flower, which of the following must be done？
(A)Add one freesia
(B)Add one iris
(C)Add one zinnia
(D)Remove the peony
(E)Remove one tulip
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