PYTHON语言程序设计（全英） 知到智慧树答案2024 z39454

第一章 单元测试

1、 Which is NOT the main part of computer ( )

A:CPU
B:memory
C:I/O equipment
D:Cache
答案: Cache

2、 Which symbol can be used for comments in Python ( )

A:#
B:!
C:“
D://
答案: #
“

3、 The integrated development tool built into Python is ( ).

A:IDLE
B:Jupyter
C:Pycharm
D:Vs code
答案: IDLE

4、 Which is the correct operator for power(Xy)? ( )

A:X^y
B:Xy
C:X^^y
D:None of the mentioned
答案: Xy

5、 Which of the following is incorrect? ( )

A:float(3)
B:float(“3”)
C:float(4.2)
D:float(“3+5”)
答案: float(“3+5”)

第二章 单元测试

1、 Which of the following is an invalid variable? ( )

A:my_string_1
B:1st_string
C:foo
D:_
答案: 1st_string

2、 What will be the output of the following Python code ?
not(10＜20) and not(10＞30) ( )

A:True
B:False
C:Error
D:No output
答案: False

3、 Which one will return error when accessing the list ‘l’ with 10 elements. ( )

A:l[0]
B:l[-1]
C:l[10]
D:l[-10]
答案: l[10]

4、 What will be the output of the following Python code?
lst=[3,4,6,1,2]
lst[1:2]=[7,8]
print(lst) ( )

A:[3, 7, 8, 6, 1, 2]
B:Syntax error
C:[3,[7,8],6,1,2]
D:[3,4,6,7,8]
答案: [3, 7, 8, 6, 1, 2]

5、 Which of the following operations will rightly modify the value of the element? ( )

A:
s=’hello’
s[0]=’H’
B:
t=(‘h’,’e’,’l’,’l’,’o’)
t[0]=’H’
C:
t={‘h’,’e’,’l’,’l’,’o’}
t[0]=’H’
D:
t=[‘h’,’e’,’l’,’l’,’o’]
t[0]=’H’
答案:
t=[‘h’,’e’,’l’,’l’,’o’]
t[0]=’H’

6、 The following program input data: 95, the output result is?
s_score=input(“Please enter your score:”)
score=int(s_score)
if score＞=90:
print(“Awesome!”)
print(“Your ability exceeds 85% of people!”) ( )

A:
Please enter your score: 95
Awesome!
B:
Please enter your score: 95
Your ability exceeds 85% of people!
C:
Please enter your score: 95
Awesome!
Your ability exceeds 85% of people!
D:none of the mentioned
答案:
Please enter your score: 95
Awesome!
Your ability exceeds 85% of people!

第三章 单元测试

1、 Which one description of condition in the followings is correct? ( )

A:The condition 35＜=45＜75 is legal, and the output is False
B:The condition 24＜=28＜25 is legal, and the output is True
C:The condition 24＜=28＜25 is legal, and the output is False
D:The condition 24＜=28＜25 is illegal
答案: The condition 24＜=28＜25 is legal, and the output is False

2、 The output of the following program is?
t = “Python”
if t＞=”python”:
t = “python”
else:
t = “None”
print(t) ( )

A:t
B:Python
C:None
D:python
答案: None

3、 for var in ___:
print(var)
Which option does not meet the grammatical requirements in the blank space of the above program? ( )

A:”Hello”
B:13.5
C:[1,2,3]
D:range(0,10)
答案: 13.5

4、 After the following program is executed, the value of s is？
s = 0
for i in range(1,20,3):
if i%5==0:
continue
elif i＞8:
break
else:
s = s -1
s = s + i
else:
s = s + 10 ( )

A:9
B:19
C:46
D:47
答案: 9

5、

Which is the output of the following code?a = 30
b = 1
if a ＞=10:
a = 20
elif a＞=20:
a = 30
elif a＞=30:
b = a
else:
b = 0
print(“a=”,a,”b=”,b) （ ）

A:a=30, b=30
B:a=30, b=1
C:a=20, b=20
D:a=20, b=1
答案: a=20, b=1

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