下述程序创建了一个数据框。程序最后的显示结果是( )import numpy as np import pandas as pd t=np.arange(1，10，2) x=t**2 mydict={‘t’:t，’x’:x} mydf=pd.DataFrame(mydict) np.sum(mydf.x) A:165 B:385 C:220 D:50 答案: 165

下述程序创建了一个数据框。程序最后的显示结果是( )import numpy as np import pandas as pd t=np.arange(1，10，2) x=t**2 mydict={‘t’:t，’x’:x} mydf=pd.DataFrame(mydict) np.sum(mydf.x) A:165 B:385 C:220 D:50 答案: 165

案: 错误英语演讲艺术0120192西安交通大学mooc慕课答案2026年版

下述程序创建了一个数据框。程序最后的显示结果是( )import numpy as np
import pandas as pd
t=np.arange(1，10，2)
x=t**2
mydict={‘t’:t，’x’:x}
mydf=pd.DataFrame(mydict)
np.sum(mydf.x)

A:165
B:385
C:220
D:50
答案: 165

本门课程完整答案：点击这里，查看《应用回归与时间序列(宁波工程学院)》mooc慕课答案2026年版

数据来源：网课题库

5. Greeting the audience in the beginnin

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下述程序创建了一个数据框。程序最后的显示结果是( )import numpy as np import pandas as pd t=np.arange(1，10，2) x=t**2 mydict={‘t’:t，’x’:x} mydf=pd.DataFrame(mydict) np.sum(mydf.x) A:165 B:385 C:220 D:50 答案: 165

头足动物的壳内被分割为多个壳室，和有孔虫类似，最后的一个壳室通常较大，是软体居住的地方，称为（）。 答案: 住室

国际上对计算机进行分类的依据是（ ）。 A:计算机的型号 B:计算机的速度 C:计算机的性能 D:计算机生产厂家 答案: 计算机的性能

下列生物全属于腹足纲的是（）。 答案: 蜗牛蛞蝓鲍

肺螺亚纲的类群在陆地或者淡水生活，其特点为（）。 答案: 没有鳃，但外套腔的表面富含血管，可供呼吸

（）为后直蛏。 答案:

Which of the following item matters most to a public speaker? A:Pronunciation. B:Language proficiency. C:Critical thinking skill. D:Inherent talent. 答案: Critical thinking skill.

Both the speaker of a casual conversation and that of a public speech need to _________. A:use formal language. B:organize their thoughts logically. C:structure the content highly. D:be self-centered. 答案: organize their thoughts logically.

WEEK 1 Unit 2 Testing

下述哪行程序没有生成正态分布的随机数？ ‍ ( ) A:x=np.random.normal(10，2，5) B:x=np.random.normal(2，5，[5，2]) C:x=np.random.normal(2，5，[2，5]) D:x=2+5*np.random.randn(10) 答案: x=np.random.normal(10，2，5)

Public speaking anxiety is a sign of psychological weakness. A:正确 B:错误 答案: 错误

在计算机应用领域里，（ ）是其最广泛的应用方面。 A:过程控制 B:科学计算 C:数据处理 D:计算机辅助系统 答案: 数据处理

You look more nervous to your audience than you actually feel. A:正确 B:错误 答案: 错误

With proper training， public speaking anxiety can be reduced. A:正确 B:错误 答案: 正确

The more familiar you are with your speech， the less nervous you may feel. A:正确 B:错误 答案: 正确

One should memorize every sentence of his or her speech. A:正确 B:错误 答案: 错误

WEEK 2 Unit 3 Testing

Choose a topic that you have been studying for years， one about which you could give a speech without any discomfort. This is the best way to acclimate yourself to public speaking within your moral and academic arena. A:正确 B:错误 答案: 正确

You may choose a topic which you have some knowledge but not enough to prepare a speech without further research. A:正确 B:错误 答案: 正确

Read and copy the Internet and professional publications to learn about the latest developments in the area you will discuss. A:正确 B:错误 答案: 错误

Most of the time， the best way to approach topic selection is to pick a single unifying message that you want to deliver and then scour your brain for amazing experiences that add emotional depth to the logical argument of your message. A:正确 B:错误 答案: 正确

When you have a real message in your head or heart – an inner urge to speak- you are almost sure to do yourself credit. A:正确 B:错误 答案: 正确

WEEK 2 Unit 4 Testing

十进制数215用二进制数表示是（ ）。 A:1100001 B:1101001 C:0011001 D:11010111 答案: 11010111

Which of the following features the most common structure of a speech? A:Topic， theme and main points. B:Concept， illustration and example. C:Introduction， body and conclusion. D:Beginning， climax and ending. 答案: Introduction， body and conclusion.

Which of the following is essential before you move into the body of your speech? A:Amusing the audience. B:Controlling your emotions. C:Building suspense. D:Previewing the main points. 答案: Previewing the main points.

Which of the following patterns is most frequently used to organize the main points in a speech? A:Topical pattern. B:Chronological pattern. C:Spatial pattern. D:Problem-solution pattern. 答案: Topical pattern.

If you want to show how the occurrence of one thing is a direct result of another thing， which pattern is probably the most effective? A:Problem-solution pattern. B:Cause-and-effect pattern. C:Topical pattern. D:Chronological pattern. 答案: Cause-and-effect pattern.

Which of the following is essential before you end your speech? A:To call for actions. B:To appeal to audience’s emotions. C:To review the main points or central idea. D:To remind the audience the importance of the topic. 答案: To review the main points or central idea.

WEEK 3 Unit 5 Testing

1. Gaining the audience attention is the most fundamental function of an introduction. A:正确 B:错误 答案: 正确

2. A speaker can establish his or her credibility by quoting from an expert. A:正确 B:错误 答案: 正确

3. A rhetorical question expects immediate verbal response from the audience. A:正确 B:错误 答案: 错误

4. A speaker needs to make an apology when he or she doesn’t behave very confidently. A:正确 B:错误 答案: 错误

5. Greeting the audience in the beginning of a speech may help the speaker release from stage fright. A:正确 B:错误 答案: 错误

WEEK 3 Unit 6 Testing

在微型计算机中应用最普遍的字符编码是（ ） A:ASCII码 B:BCD码 C:汉字编码 D:补码 答案: ASCII码

下述哪个命令不能实现普通最小二乘回归？( ) A:statsmodels.api.OLS() B:statsmodels.formula.api.ols() C:numpy.linalg.lstsq() D:pandas.formula.api.ols() 答案: pandas.formula.api.ols()

Which of the following belongs to the general types of speech?

Choose the right statement 答案: Innovation practice is not high risk， and there is innovation spirit in all fields and industries.

Choose the wrong statement 答案: John sees his cousin make a lot of money selling three no masks. He thinks that under this special epidemic period， it would be lucky to have masks. This is a rare opportunity to start a business.

?

Chapter 2 Entrepreneurial Team Chapter 2 Test： Entrepreneurial Team

Which of the following statement or practice is wrong??(single choice) 答案: Some people in the team leave after a period of time. After a while， new people came. It’s a lot of trouble for people to come and go. So what one can do is done by himself. There is no need to find a partner.

Who is more suitable to be a partner in the following choices?(single choice) 答案: Joe is the founder’s classmate and roommate， and he has the same ambition as the founder.

Chapter 3 Entrepreneurial Opportunities Chapter 3 Test： Entrepreneurial Opportunities

以下是冯•诺依曼体系结构计算机的基本思想之一的是（ ） A:计算精度高 B:存储程序控制 C:处理速度快 D:可靠性高 答案: 存储程序控制

下述哪个命令不是用来创建数据框变量的？( ) A:mydf = pandas.read_csv(‘data.csv’) B:mydf = pandas.read_csv(‘data.txt’) C:myfile=open(‘data.txt’) D:df=pandas.DataFrame([[‘alice’，87]，[‘benny’，80]，[‘chris’，92]]) 答案: myfile=open(‘data.txt’)

Which of the following innovations does not use the divergent 6W method? 答案: When an American social network enters Japan， it continues its existing framework and design without considering the social habits and personality characteristics of Japanese young people.

下述程序创建了一个数据框。程序最后的显示结果是( )import numpy as np
import pandas as pd
t=np.arange(1，10，2)
x=t**2
mydict={‘t’:t，’x’:x}
mydf=pd.DataFrame(mydict)
np.sum(mydf.x)

A:165
B:385
C:220
D:50
答案: 165

头足动物的壳内被分割为多个壳室，和有孔虫类似，最后的一个壳室通常较大，是软体居住的地方，称为（）。

答案: 住室

国际上对计算机进行分类的依据是（）。

A:计算机的型号
B:计算机的速度
C:计算机的性能
D:计算机生产厂家
答案: 计算机的性能

下列生物全属于腹足纲的是（）。

答案: 蜗牛蛞蝓鲍

肺螺亚纲的类群在陆地或者淡水生活，其特点为（）。

答案: 没有鳃，但外套腔的表面富含血管，可供呼吸

（）为后直蛏。

答案:

Which of the following item matters most to a public speaker?

A:Pronunciation.
B:Language proficiency.
C:Critical thinking skill.
D:Inherent talent.
答案: Critical thinking skill.

Both the speaker of a casual conversation and that of a public speech need to _________.

A:use formal language.
B:organize their thoughts logically.
C:structure the content highly.
D:be self-centered.
答案: organize their thoughts logically.

下述哪行程序没有生成正态分布的随机数？ ‍ ( )

A:x=np.random.normal(10，2，5)
B:x=np.random.normal(2，5，[5，2])
C:x=np.random.normal(2，5，[2，5])
D:x=2+5*np.random.randn(10)
答案: x=np.random.normal(10，2，5)

Public speaking anxiety is a sign of psychological weakness.

A:正确
B:错误
答案: 错误

在计算机应用领域里，（）是其最广泛的应用方面。

A:过程控制
B:科学计算
C:数据处理
D:计算机辅助系统
答案: 数据处理

You look more nervous to your audience than you actually feel.

A:正确
B:错误
答案: 错误

With proper training， public speaking anxiety can be reduced.

A:正确
B:错误
答案: 正确

The more familiar you are with your speech， the less nervous you may feel.

A:正确
B:错误
答案: 正确

One should memorize every sentence of his or her speech.

A:正确
B:错误
答案: 错误

Choose a topic that you have been studying for years， one about which you could give a speech without any discomfort. This is the best way to acclimate yourself to public speaking within your moral and academic arena.

A:正确
B:错误
答案: 正确

You may choose a topic which you have some knowledge but not enough to prepare a speech without further research.

A:正确
B:错误
答案: 正确

Read and copy the Internet and professional publications to learn about the latest developments in the area you will discuss.

A:正确
B:错误
答案: 错误

Most of the time， the best way to approach topic selection is to pick a single unifying message that you want to deliver and then scour your brain for amazing experiences that add emotional depth to the logical argument of your message.

A:正确
B:错误
答案: 正确

When you have a real message in your head or heart – an inner urge to speak- you are almost sure to do yourself credit.

A:正确
B:错误
答案: 正确

十进制数215用二进制数表示是（）。

A:1100001
B:1101001
C:0011001
D:11010111
答案: 11010111

Which of the following features the most common structure of a speech?

A:Topic， theme and main points.
B:Concept， illustration and example.
C:Introduction， body and conclusion.
D:Beginning， climax and ending.
答案: Introduction， body and conclusion.

Which of the following is essential before you move into the body of your speech?

A:Amusing the audience.
B:Controlling your emotions.
C:Building suspense.
D:Previewing the main points.
答案: Previewing the main points.

Which of the following patterns is most frequently used to organize the main points in a speech?

A:Topical pattern.
B:Chronological pattern.
C:Spatial pattern.
D:Problem-solution pattern.
答案: Topical pattern.

If you want to show how the occurrence of one thing is a direct result of another thing， which pattern is probably the most effective?

A:Problem-solution pattern.
B:Cause-and-effect pattern.
C:Topical pattern.
D:Chronological pattern.
答案: Cause-and-effect pattern.

Which of the following is essential before you end your speech?

A:To call for actions.
B:To appeal to audience’s emotions.
C:To review the main points or central idea.
D:To remind the audience the importance of the topic.
答案: To review the main points or central idea.

1. Gaining the audience attention is the most fundamental function of an introduction.

A:正确
B:错误
答案: 正确

2. A speaker can establish his or her credibility by quoting from an expert.

A:正确
B:错误
答案: 正确

3. A rhetorical question expects immediate verbal response from the audience.

A:正确
B:错误
答案: 错误

4. A speaker needs to make an apology when he or she doesn’t behave very confidently.

A:正确
B:错误
答案: 错误

5. Greeting the audience in the beginning of a speech may help the speaker release from stage fright.

A:正确
B:错误
答案: 错误

在微型计算机中应用最普遍的字符编码是（）

A:ASCII码
B:BCD码
C:汉字编码
D:补码
答案: ASCII码

下述哪个命令不能实现普通最小二乘回归？( )

A:statsmodels.api.OLS()
B:statsmodels.formula.api.ols()
C:numpy.linalg.lstsq()
D:pandas.formula.api.ols()
答案: pandas.formula.api.ols()

Choose the right statement

答案: Innovation practice is not high risk， and there is innovation spirit in all fields and industries.

Choose the wrong statement

答案: John sees his cousin make a lot of money selling three no masks. He thinks that under this special epidemic period， it would be lucky to have masks. This is a rare opportunity to start a business.

Which of the following statement or practice is wrong??(single choice)

答案: Some people in the team leave after a period of time. After a while， new people came. It’s a lot of trouble for people to come and go. So what one can do is done by himself. There is no need to find a partner.

Who is more suitable to be a partner in the following choices?(single choice)

答案: Joe is the founder’s classmate and roommate， and he has the same ambition as the founder.

以下是冯•诺依曼体系结构计算机的基本思想之一的是（）

A:计算精度高
B:存储程序控制
C:处理速度快
D:可靠性高
答案: 存储程序控制

下述哪个命令不是用来创建数据框变量的？( )

A:mydf = pandas.read_csv(‘data.csv’)
B:mydf = pandas.read_csv(‘data.txt’)
C:myfile=open(‘data.txt’)
D:df=pandas.DataFrame([[‘alice’，87]，[‘benny’，80]，[‘chris’，92]])
答案: myfile=open(‘data.txt’)

Which of the following innovations does not use the divergent 6W method?

答案: When an American social network enters Japan， it continues its existing framework and design without considering the social habits and personality characteristics of Japanese young people.