2017级三四班计算机导论同步课

2017-10-17 16:34
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1.#

2.L[3]=d  L[3:5]=['d','e']  L[:5]=['a','b','c','d','e']  L[3:]=['d','e','f','g']  L[::2]=['a','c','e','g']  L[::-1]=['g','f','e','d','c','b','a']   L[-2:-5]=[]

1.B

2.B

3.C