单项选择题
According to the passage, an important limitation of relativity theory is that（）
A．it fails to describe space on a non-local level, complicating attempts to determine the geometrical model of the universe
B．it cannot account for the possibility that the universe may be multiply- connected instead of singly-connected
C．it yields inconsistencies in spatial topology equations, discriminating unnecessarily between the torus and the plane
D．it creates the illusion that observable space is curved, when in fact the universe may be Euclidean and planar
E．it does not provides sufficient variety in geometrical models to describe all the possible ways in which space may curve
相关考题
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单项选择题
The author refers to the illusion of seeing crowds primarily in order to（）
A．illustrate that relativity theory remains a useful tool in determining the topology of the universe
B．indicate a descriptive advantage that toruses might have over Euclidean or hyperbolic universes
C．argue that empirical methods of determining the shape of the universe are invariably doomed to failure
D．suggest that the common sense behind the notion that the universe is simply- connected may be misguided
E．assert that two models of the geometry of the universe may vary in terms of observable predictions but be mathematically equivalent -
单项选择题
It can be inferred from the passage that economic theory as it presently stands would most likely apply to which of the following situations（）
A．A parliamentary system, where senior members vote by secret ballot.
B．An arts guild, where voting authority is determined by the level of skill at a craft.
C．A fan club, where a president elects other members of the club.
D．A board of trustees group, where all members vote to make company decisions.
E．A monarchy, where a king consults his vassal lords before making decisions. -
单项选择题
PURIST: ADULTERATION ::（）
A．martinet: indiscipline
B．sloth: languidness
C．chief: instruction
D．militarist: passion
E．aesthete: equitability
