The aircraft really got off the ground in 1903.

When was After Many Years produced A: 1899. B: 1903. C: 1907. D: 1910.

When did Marie get married A: In 1895. B: In 1898. C: In 1902. D: In 1903.

When was Marie Curie awarded the Nobel Prize in Physics A: In 1911. B: In 1903. C: In 1944. D: In 1902.

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’]]

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']]

莱特兄弟1903

In 1903, an American Henry Adams is stra... and .

In 1903, an American Henry Adams is stra... and .

In 1903, Mikhail Tsvet invented chromatography, an important__1__ technique.