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The physics of elementary particles is notorious for the fancifulness of its terminology, abounding as it does in na
The physics of elementary particles is notorious for the fancifulness of its terminology, abounding as it does in na
admin
2012-01-15
54
问题
The physics of elementary particles is notorious for
the fancifulness of its terminology, abounding as
it does in names such as "quark," "flavor,"
Line "strangeness" and "charm." One term, however,
(5) even to the nonscientist seems most apt: "gluon."
Physicists conjecture that the gluon is the "glue"
connecting quarks into hadrons or strongly inter-
acting particles (protons, neutrons, pions, etc.).
Initially, physicists envisaged the gluon’s adhe-
(10) sive strength to be so powerful that a quark could
not be extracted from a hadron no matter how
great the force brought to bear on it. Furthermore,
the gluon itself also seemed to be permanently
bound: just as no force seemed strong enough to
(15) pry apart the quarks, none appeared strong
enough to squeeze out a single drop of the glue
that bound them. Today, however, some physi-
cists hypothesize the existence of pure glue: glu-
ons without quarks, or gluonium, as they call it.
The author refers to charms and quarks (lines 3-4) primarily in order to
选项
A、demonstrate the similarity between these particles and the gluon
B、make a distinction between apposite and inapposite terminology
C、offer an objection to suggestions of similar frivolous names
D、provide illustrations of idiosyncratic nomenclature in contemporary physics
E、cite preliminary experimental evidence sup-porting the existence of gluons
答案
D
解析
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本试题收录于:
GRE VERBAL题库GRE分类
0
GRE VERBAL
GRE
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