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以下代码的输出结果是______。‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‫‫‪‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‪‪ ls=["2020","20.20","Python"] ls.append(2020) ls.append([2020,"2020"]) print(ls)

A. ['2020','20.20','Python',2020,['2020']]
B. ['2020','20.20','Python',2020]
C. ['2020','20.20','Python',2020,[2020,'2020']]
D. ['2020','20.20','Python',2020,2020,'2020']

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以下程序的输出结果是______。‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‫‫‪‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‪‪ x=[90,87,93] y=("Aele","Bob","lala") z={} foriinrange(len(x)): z[i]=list(zip(x,y)) print(z)

A. {0:[(90,'Aele'),(87,'Bob'),(93,'lala')],1:[(90,'Aele'),(87,'Bob'),(93,'lala')],2:[(90,'Aele'),(87,'Bob'),(93,'lala')]}
B. {0:[90,'Aele'],1:[87,'Bob'],2:[93,'lala']}
C. {0:(90,'Aele'),1:(87,'Bob'),2:(93,'lala')}
D. {0:([90,87,93],('Aele','Bob','lala')),1:([90,87,93],('Aele','Bob','lala')),2:([90,87,93],('Aele','Bob','lala'))}

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列表变量x=['12','34']，执行语句print("'".join(x))，输出的结果是：‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‫‫‪‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‪‪

A. '12'34'
B. 12'34
C. '12'34
D. 12'34’

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关于以下程序输出结果的描述，错误的选项是：‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‫‫‪‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‪‪ xy=[0,0] print(id(xy),xy) xy=xy+[3,3] print(id(xy),xy) xy=[0,0] xy.append([3,3]) print(id(xy),xy)

A. 用xy=xy+[3,3]表达式，会创建一个新的列表变量
B. 用xy=xy+[3,3]表达式，使得xy变量里的[0,0]值变成[3,3]
C. 这两段代码输出的xy的值，是不一样的
D. 用xy.append([3,3])表达式，没有创建新的列表变量

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以下程序的输出结果是：‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‫‫‪‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‪‪ list1=['aa','bb','cc'] list1.insert(1,'123') print(list1)

A. 'aa','123','bb','cc'
B. ['aa','123','bb','cc']
C. ['aa','bb','123','cc']
D. 'aa','bb','123','cc'

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以下代码的输出结果是______。‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‫‫‪‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‪‪ ls=["2020","20.20","Python"] ls.append(2020) ls.append([2020,"2020"]) print(ls)

A. ['2020','20.20','Python',2020,['2020']] B. ['2020','20.20','Python',2020] C. ['2020','20.20','Python',2020,[2020,'2020']] D. ['2020','20.20','Python',2020,2020,'2020']

以下程序的输出结果是______。‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‫‫‪‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‪‪ x=[90,87,93] y=("Aele","Bob","lala") z={} foriinrange(len(x)): z[i]=list(zip(x,y)) print(z)

列表变量x=['12','34']，执行语句print("'".join(x))，输出的结果是：‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‫‫‪‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‪‪

关于以下程序输出结果的描述，错误的选项是：‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‫‫‪‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‪‪ xy=[0,0] print(id(xy),xy) xy=xy+[3,3] print(id(xy),xy) xy=[0,0] xy.append([3,3]) print(id(xy),xy)

以下程序的输出结果是：‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‫‫‪‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‪‪ list1=['aa','bb','cc'] list1.insert(1,'123') print(list1)

A. ['2020','20.20','Python',2020,['2020']]
B. ['2020','20.20','Python',2020]
C. ['2020','20.20','Python',2020,[2020,'2020']]
D. ['2020','20.20','Python',2020,2020,'2020']