In following poets, who is considered as the most popular poet in the 19th century America（）
A. Philip Freneau
B. Walt Whitman
C. Edgar Allan Poe
D. Henry Wadsworth Longfellow
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With the appearance of _____ in 1855, which is about American Indians, Longfellow’s poetic reputation was established（）
A. The Courtship of Miles Standish
B. Song of Hiawatha
C. Michael Angelo
D. Evangeline
常用的软件体系结构建模工具是（）
A. JAVA开发工具
B. Visual Studio 2019开发工具
C. ArchStudio开发工具
D. UML开发工具
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
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
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