The author states that the research described in the first paragraph was undertaken in order to______
A. determine the age of an actual meteor stream
B. Identify the various structural features of meteor streams
C. explore the nature of a particularly interesting meteor stream
D. test the hypothesis that meteor streams become broader as they age
E. show that a computer model could help in explaining actual astronomical data
查看答案
股份有限公司的公开募集设立,实行准则设立制度。 ()
A. 正确
B. 错误