[音频]C3: 1 There are ______________ ways of sending things safely through the post office.
A: one
B: two
C: three
A: one
B: two
C: three
举一反三
- 下列选项中,不能创建字典对象的语句是( )。 A: {'one':1, 'two':2, 'three':3} B: dict('one':1, 'two':2, 'three':3) C: {one=1, two=2, three=3} D: dict(one=1, two=2, three=3)
- 下列选项中,不能创建字典对象的语句是( )。 A: {'one':1, 'two':2, 'three':3} B: dict('one':1, 'two':2, 'three':3) C: dict([('one',1), ('two',2), ('three',3)]) D: dict(zip(['one','two','three'], [1,2,3]))
- Contact can be as simple as sending everyone a friendly reminder through office e-mail, phone calls, or a post card reminder through the mail.
- 字典类型主要是根据键来提取对应的值,通过赋值操作可以实现字典元素的增添和修改,若对字典10、Dict={2:’two’,3:’three’,1:’one’}进行操作Dict[1]=’One’,此时字典Dict将会变为()(注意,下面选项不考虑顺序性)。 A: {2:’two’,3:’one’,1:’one’} B: {2:’two’,3:’three’,1:’One’} C: {2:’two’,3:’three’,1:’one’,1:’One’} D: {2:’One’,3:’three’,1:’one’}
- 以下对枚举类型名的定义中正确的是()。 A: enuma={one,two,three}; B: enuma{one=9,two=-1,three}; C: enuma={"one","two","three"}; D: enuma{"one","two","three"};