以下程序运行后的输出结果是x="hello "print(x*3)
A. hello*3
B. hello hello hello
C. hello
D. hellohellohello
查看以下代码：list1=[1,2,3,4]print(list1[1])
A. 1
B. 2
C. 3
D. 4
下面代码的输出结果是s=["seashell","gold","pink","brown","purple","tomato"]print(s[1:4:2])
A. ["gold","prink","brown"]
B. ["gold","pink"]
C. ["seashell","gold","pink","brown","purple","tomato"]
D. ["gold","brown"]
a=[[1,2,3],[4,5,6],[7,8,9]]s=0for c in a:for j in range(3):s+=c[j]print(s)
A. 0
B. 45
C. 24
D. 以上答案都不对
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