Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.

　　Samantha tends to behave -------, rarely considering the consequences of her reckless actions.

　　(A) seriously

　　(B) deceitfully

　　(C) cautiously

　　(D) deliberately

　　(E) impetuously

　　Explanation

　　Because Samantha "rarely" considers what will happen when she does "reckless," or irresponsible, things, it makes sense to say that she "tends to behave impetuously," or that she usually acts impulsively and without thought or care.

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（编辑：马菲）