2. 外语
  3. A. a fraction of an inch B. the creation of new entities C. the same amount of mass D. the tiniest particle E. an explosion of h

A. a fraction of an inch B. the creation of new entities C. the same amount of mass D. the tiniest particle E. an explosion of h

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问题 A. a fraction of an inch B. the creation of new entities
C. the same amount of mass D. the tiniest particle
E. an explosion of huge stars F. the existence of black holes
Black holes are formed after.
选项
答案E
解析 根据第二段“Black holes come from stars that are made of hydrogen，other gases and a fewmetals．When these explode it can turn into a stellar—mass(恒星质量)black hole…”可知，恒星爆炸形成黑洞，所以本题选E。
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