建立文件add.py，写入以下代码： print（“the first number is:”） print（30+50） print（“the second number is:”） 30*50保存并运行脚本文件，输出结果为（）
A. the first number is:80the second number is:150
B. the first number is: 80the second number is: 150
C. the first number is:80the second number is:1500
D. the first number is:80the second number is
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下面安装包的命令中，错误的是：______（）
A. conda install tensorflow=2.0.0 beta
B. conda install tensorflow==1.14.0
C. pip install tensorflow=2.0.0 alpha
D. pip install tensorflow==2.0
Which of the following item matters most to a public speaker（）
A. Pronunciation
B. Language proficiency
Critical thinking skill
D. Inherent talent
How can we define Logos, Ethos, Pathos（）
A. Logical reason, human character, and emotion language
B. Emotional language,motivated appeals, and sad stories
C. Important information,strategies, and statistics
D. Emotional or motivated appeals; speakers/author’s authority; the logic used to support a claim
What are the three general purposes for giving speeches（）
A. To persuade, act , & adjust your speaking style
B. To inform, make people laugh, & have fun
C. To inform, persuade, & entertain
D. To improve English listening, speaking and writing
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