1.已知列表x=list(range(9))，那么执行语句delx:2之后，
x的值为(D)
A.1,3,5, 7,9
B.1, 3, 5, 7
C.0, 1, 3, 5,7D.2, 3, 4, 5, 6, 7, 8
- len(range(1, 10) )的值是(B)A.8 B.9 C.10D.11
3.表达式",".join(list)中list是列表类型，以下选项中对其功
能的描述正确的是(D)
A.将逗号字符串增加到列表list中
B.在列表list每个元素后增加一个逗号
C.将列表所有元素连接成一个字符串，每个元素后增加一个逗号
D.将列表所有元素连接成一个字符串，元素之间增加一个逗号
4.表达式1,2,3x3的执行结果为(A)
A.1,2,3,1,2,3,1,2,3
B.{1,2,3,1,2,3,1,2,3}
C.1,2,3,1,2,3,1,2,3
D.(1,1,1,2,2,2,3,3,3)
5.假设列表对象aList的值为3,4,5,6,7,9,11,13,15,17,那么切片aList3:7得到的值是(B)
A.5,6,7,9,11
B.6,7,9,11
C.5,6,7,9,
D.[7,9,11,131
6.已知x=list(range(20))，那么表达式x-1的值为(D)。A.0B.1C.20D.19
7.切片操作list(range(6))::2执行结果为(D)A.0,1B.0,2,4,6C.0,1,2D.0,2,4
8.已知x=3,7,5，那么执行语句x=x.sort(reverse=True)之后，x的值为(C)
A.3,5,7B.7,5,3C.NoneD .3,7,5
9.下面程序输出是什么?(D)
xt="a","b","c","d","e"
stop_words="d","i"
=x for x in txt if x not in stop_words
print(t)
A.a","b","c","d","e"
B."a","b","c","d"
C."a","b","c"
D."a","b","c","e"
10.下面程序的输出是:(A)
ls="abcd","ab","cd","cdab"
n,m=0,0
for line in ls:
if "ab" and "cd" in line:
n+=1
m+=1
elif "ab" in line:
n+=1
elif "cd" in line:
m+=1p
rint (n,m)
A:3 3B:3 4C:4 3D:4 4
1.以下程序的输出结果是(A):s=11,22,33,44for i in ls:
计i=="33:print("找到!i=",i)
break
else
print("未找到...")
A:未找到...B:未找到...未找到...找到!I=33C:未找到...未找到...未找到...未找到...
D:找到!I=33
12.以下程序的输出结果是(A):
k=0
for i in range (4):
for j in range(i+1):
k+=j
ifj>1:
break
print(k)
A:5B:6C:7D:8