import random

Is=['a','d','c','d']

print(random.sample(ls,2))

for a in range(len(s):

        print(a,end=" ")

程序运行时输出正确的结果是（ ）

s=0

for i in range(1,11):

     s=s+i

     i=i+1

print(s)

以上程序去掉那一语句，将不影响程序的功能( )

S = 'Pame'

for i in range(len(S)):

    print(S[-i],end="")

    print(x+y,end=" ")