单项选择题
Polarized light is a probably phenomenon characterized by its ______.
A.rotational symmetry.
B.charged particles.
C.radiation flashes.
D.frequent twists.
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单项选择题
The departure of the splendid Hale-Bopp comet is mentioned______.
A.to honor the contributions of Hale-Bopp.
B.to introduce to the topic of new report on cosmic matters.
C.to challenge the basic tenets of astronomy.
D.to recount the reactions of the public to the comet.
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单项选择题
It is evident that, in speculating about twisting effects, Nodland and Ralslon focused mainly on______.
A.unconventional measurement instruments.
B.assumptions and deductions.
C.references to scientific literature.
D.discrimination against basic doctrines.
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