【单选题】下面代码的输出结果是 a=[1,2,3] if isinstance( a, float) print("{}" is float".format. a) else: print ("{}" is not float".format. a) A。执行代码出错 B a is C.[1, 2, 3] is not float D. a is float
【简答题】Please help! Ladies and gentlemen, thank you very much for coming to this concert. I hope you have enjoyed the music. The purpose of this concert is to (1) money for children in Africa. Every day (2) ...