A has remained a puzzle B lacks sufficient evidence C is a university professor D was generated by the explosion E will kill man

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问题 A has remained a puzzle
B lacks sufficient evidence
C is a university professor
D was generated by the explosion
E will kill many animals
F are attacked by aliens
Wolfgang Kundt, who has developed an alternative theory, ______.

选项

答案C

解析 句意:Wolfgang Kundt是德国波恩大学的一位教授,提出了另一个理论。根据第五段“Wolfgang Kundt,a professor at Germany’s Bonn University”可知选C.
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