E.What are blaCk holes made of?
F.How are blaCk holes formed?
24、Paragraph 2 __________.
A.What happens to the objeCts around a blaCk hole?
B.Is there proof that blaCk holes really exist?
C.How were blaCk holes named?
D.What are different types of blaCk holes?
E.What are blaCk holes made of?
F.How are blaCk holes formed?
25、Paragraph 3__________.
A.What happens to the objeCts around a blaCk hole?
B.Is there proof that blaCk holes really exist?
C.How were blaCk holes named?
D.What are different types of blaCk holes?
E.What are blaCk holes made of?
F.How are blaCk holes formed?
26、Paragraph 4__________.
A.What happens to the objeCts around a blaCk hole?
B.Is there proof that blaCk holes really exist?
C.How were blaCk holes named?
D.What are different types of blaCk holes?
E.What are blaCk holes made of?
F.How are blaCk holes formed?
27、BlaCk holes are formed after__________.
A.the existenCe of blaCk holes
B.the Creation of renew entities
C.the same amount of mass
D.an explosion of huge stars
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