题目内容
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[主观题]
Which of the following about comets is INCORRECT?A.They are great in number.B.Their arriva
Which of the following about comets is INCORRECT?
A.They are great in number.
B.Their arrivals used to frighten human beings.
C.They are named after their discoverers.
D.They are large mushy snowballs of frozen ices and gases.
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