元组变量t=(“cat”, “dog”, “tiger”, “human”), t[::-1]的结果是、
(A){‘human’, ‘tiger’, ‘dog’, ‘cat’}
(B) [‘human’, ‘tiger’, ‘dog’, ‘cat’]
(C) (“cat”, “dog”, “tiger”, “human”)
(D) (‘human’, ‘tiger’, ‘dog’, ‘cat’)
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(A){‘human’, ‘tiger’, ‘dog’, ‘cat’}
(B) [‘human’, ‘tiger’, ‘dog’, ‘cat’]
(C) (“cat”, “dog”, “tiger”, “human”)
(D) (‘human’, ‘tiger’, ‘dog’, ‘cat’)