举一反三
- 下面代码的执行结果是( ) 。ls = ["2020", "20.20", "Python"] ls.append(2020)ls.append([2020, "2020"])print(ls) A: ['2020', '20.20', 'Python', 2020, 2020, '2020'] B: ['2020', '20.20', 'Python', 2020, [2020, '2020']] C: ['2020', '20.20', 'Python', 2020] D: ['2020', '20.20', 'Python', 2020, ['2020']]
- 下面代码的执行结果是： 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, 2020, '2020'] C: ['2020', '20.20', 'Python', 2020] D: ['2020', '20.20', 'Python', 2020, [2020, '2020']]
- 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] B: ['2020', '20.20', 'Python', 2020, [2020, '2020']] C: ['2020', '20.20', 'Python', 2020, 2020, '2020'] D: ['2020', '20.20', 'Python', 2020, ['2020']]
- 下面代码的执行结果是：（ ）ls= [“2020”, “20.20”, “Python”]ls.append(2020)ls.append([2020, “2020”])print(ls) A: [‘2020’, ‘20.20’, ‘Python’, 2020] B: [‘2020’, ‘20.20’, ‘Python’, 2020, [2020, ‘2020’]] C: [‘2020’, ‘20.20’, ‘Python’, 2020, [‘2020’]] D: [‘2020’, ‘20.20’, ‘Python’, 2020, 2020, ‘2020’]r
- 以下代码的输出结果是( )。 ls = ["2020", "20.20", "Python"] ls.append([2020, "2020"]) [br][/br]print(ls) A: ['2020', '20.20', 'Python', [2020, '2020']] B: ['2020', '20.20', 'Python', 2020, ['2020']] C: ['2020', '20.20', 'Python', 2020,] D: ['2020', '20.20', 'Python', 2020, '2020']
内容
- 0
3.下面代码的执行结果是（ ）。>>>ls = ["2020", "20.20", "Python"] >>>ls.append(2020)>>>ls.append([2020, "2020"])>>>print(ls) A: ['2020', '20.20', 'Python', 2020, [2020, '2020']] B: ['2020', '20.20', 'Python', 2020, 2020, '2020'] C: ['2020', '20.20', 'Python', 2020] D: ['2020', '20.20', 'Python', 2020, ['2020']]
- 1
以下代码的输出结果是（ ）ls = [“2020”,”1903”,”Python”]ls.append(2050)ls.append([2020,”2020”])print(ls) A: [‘2020’,’1903’,’Python’,2020,[2050,’2020’]] B: [‘2020’,’1903’,’Python’,2020] C: [‘2020’,’1903’,’Python’,2050,[2020,’2020’]] D: [‘2020’,’1903’,’Python’,2050,[‘2020’]]
- 2
阅读以下程序，其运行结果为（ ） ls=['2020','1903','Python'] Is.append(2050) Is.append([2020,'2020']) print(ls) A: ['2020', '1903', 'Python', 2050, 2020, '2020'] B: ['2020', '1903', 'Python', 2050, [2020, '2020']] C: ['2020', '1903', 'Python', 2050] D: ['2020', '1903', 'Python', 2050, [ '2020']]
- 3
τ(2020) = ，σ(2020)=
- 4
【单选题】”在2020年“怎么说? A. in 2020 B. on 2020 C. at 2020 D. by 2020