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)

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’}

建立3阶幺矩阵A的语句是（ ）。? A=one(3)|A=ones(3,1)|A=one(3,3) ; ; ; ;;|A=ones(3,3)

‍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]))

How long will the vacation last? A: one month B: 3 days C: one week

3) being a 15 at one of those parks.

3.One advantage of staying in the university district is_____. A: the friendly environment B: more entertainment activities C: easy access to the university library D: the convenient public transportation

3.One thing business owners often need to do for marketing is_____. A: to hire a team of experts B: to expand overseas market C: to build up a brand strategy D: to find a location downtown

中国大学MOOC: 3、单反相机上的“ONE SHOT”“AF-S”，

(1) Dialects refer to __________ differences and these differences can be national, regional or local .(2). One’s social background does influence one’s choice of linguistic forms and one’s language reveals one’s __________. In this aspect, __________ is an important marker of sociolect.(3) Socialects also refer to one’s style according to the communicative situation: __________ and __________.