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.

单项选择题

The reactions of the scientific circles to the new reports can be best described as that of______.

A．puzzlement.
B．alarm.
C．amazement.
D．disinterest.