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发表于 2012-2-27 20:55:22
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The dark regions in the starry night sky are not
pockets in the universe that are devoid of stars as
had long been thought. Rather, they are dark because
Line of interstellar dust that hides the stars behind it.
5 Although its visual effect is so pronounced, dust is
only a minor constituent of the material, extremely
low in density, that lies between the stars. The average density of interstellar material in the vicinity of our Sun is 1,000 to 10,000 times less than the best terrestrial
10 laboratory vacuum. It is only because of the enormous interstellar distances that so little material per unit of
volume becomes so significant. Optical astronomy
is most directly affected, for although interstellar gas
is perfectly transparent, the dust is not. (125 words)
. It can be inferred from the passage that it is
because space is so vast that
(A) little of the interstellar material in it seems substantial
(B) normal units of volume seem futile for measurements
of density
(C) stars can be far enough from Earth to be obscured
even by very sparsely distributed matter
(D) interstellar gases can, for all practical purposes, be
regarded as transparent
(E) optical astronomy would be of little use even if no
interstellar dust existed
A mysterious phenomenon is the ability of over-water migrants to travel on course. Birds, bees, and other species can keep track of time without any sensory cues
Line from the outside world, and such ―biological clocks‖
5 clearly contribute to their ―compass sense.‖ For example, they can use the position of the Sun or stars, along with the time of day, to find north. But compass sense alone cannot explain how birds navigate the ocean: after a flock traveling east is blown far south by a storm, it will
10 assume the proper northeasterly course to compensate. Perhaps, some scientists thought, migrants determine their geographic position on Earth by celestial navigation, almost as human navigators use stars and planets, but this would demand of the animals a fantastic map sense.
15 Researchers now know that some species have a magnetic sense, which might allow migrants to determine their geographic location by detecting variations in the strength of the Earth‘s magnetic field. (157 words)
7. It can be inferred from the passage that if the
flock of birds described in lines 8-9 were
navigating by compass sense alone, they would, after the storm, fly
(A) east (B) north (C) northwest
(D) south (E) southeast
8. Of the following descriptions of migrating
animals, which most strongly suggests that the
animals are depending on magnetic cues to orient
themselves?
(A) Pigeons can properly readjust their course
even when flying long distances through
exceedingly dense fogs.
(B) Bison are able to reach their destination by
passing through a landscape that has
been partially altered by a recent fire.
(C) Elephants are able to find grounds that
some members of the herd have never seen
before.
(D) Swallows are able to return to a given spot
at the same time every year.
(E) Monarch butterflies coming from different
The belief that art originates in intuitive rather than rational faculties was worked out historically and philosophically in the somewhat wearisome volumes of
Line Benedetto Croce, who is usually considered the originator
5 of a new aesthetic. Croce was, in fact, expressing a very old idea. Long before the Romantics stressed intuition and self-expression, the frenzy of inspiration was regarded as fundamental to art, but philosophers had always assumed it must be controlled by law and by the
10 intellectual power of putting things into harmonious order. This general philosophic concept of art was supported by technical necessities. It was necessary to master certain laws and to use intellect in order to build Gothic cathedrals, or set up the stained glass windows of
15 Chartres. When this bracing element of craftsmanship ceased to dominate artists‘ outlook, new technical elements had to be adopted to maintain the intellectual element in art. Such were linear perspective and anatomy.
The passage suggests that which of the following
would most likely have occurred if linear perspective and anatomy had not come to influence artistic endeavor?
(A) The craftsmanship that shaped Gothic
architecture would have continued to
dominate artists‘ outlooks.
(B) Some other technical elements would have
been adopted to discipline artistic inspiration.
(C) Intellectual control over artistic inspiration
would not have influenced painting as it
did architecture.
(D) The role of intuitive inspiration would not
have remained fundamental to theories of
artistic creation.
(E) The assumptions of aesthetic philosophers
before Croce would have been invalidated. |
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