While the causes of the Cretaceous-Tertiary extinction have received the most attention, Alvarez’s paper points out work on the

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问题 While the causes of the Cretaceous-Tertiary extinction have received the most attention, Alvarez’s paper points out work on the other major mass extinctions that may also be______for the tragedy.

选项 A、answerable
B、indefensible
C、pitiable
D、reprehensible
E、avoidable

答案A

解析
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