Python语句print(tuple([1,2,3]))的运行结果是：

Sheisa()student.

Mikelikes()peopleinbiggroups.

Youseemprettybusy().

Ithasbeen3months()welastsaweachother.

()apart-timejobmayopenanotherdoorfornewfriendships.

First,don'tseeyourclassmates()strangers.

Communicateoftenandyou'llgetalong()withoneanother.

Nobodyis()inhisstory.

Haveyoueverbeen()yourdiet?

Lily'spocketmoney()thanherfriends'.

若让元素1，2，3，4，5依次进栈，则出栈次序不可能出现在（）种情况。

设A={1,2,3}，则A上的二元关系有()个。

对于for(表达式1；；表达式3)可理解为（）

以下程序的输出结果是ls1=[1,2,3,4,5]ls2=[3,4,5,6,7,8]cha1=[]foriinls2:ifinotinls1:cha1.append(i)print(cha1)