单项选择题

FEIGNED:

A． positive
B． liberated
C． pleased
D． authentic
E． unperturbed
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单项选择题
It can be inferred from the passage that the Cepheid variable method of estimating galactic distances would be likely to yield experimentally flawed results in which of the following circumstances
A． If the luminosity of ordinary stars being compared with that of a Cepheid star were affected by parallax.
B． If the apparent brightness of the Cepheid star being studied required an unusually long period of time to vary.
C． If the gravitational interference surrounding the Cepheid star being observed were more negligible than in most cases.
D． If the Cepheid star being studied existed on the periphery of the universe, at an extremely large distance from the observer.
E． If the Cepheid star being studied were in the same galaxy as the observer.
单项选择题
Which of the following statements best illustrates the main point of the last paragraph of the passage
A． Einstein was not a thoroughgoing realist, in particular where the interpretation of quantum mechanics was concerned.
B． When Newton predicted that gravity affects all objects equally, his theory was not improved by experimental trials.
C． Those impressed by Hume's argument often conclude that experience plays only a psychological or rhetorical role.
D． Pasteur's search for a means of bacterial sterilization was assisted greatly by the process of experiment.
E． Galileo's astronomy theory itself was less reliable than the predictions he drew from it.
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