在计算机内部，一切信息的存储、处理与传送都采用二进制来表示。( )
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Questions 19 to 21 are based on the conversation you have just heard.
A. He lives on the 10th floor of Butler Hall. B. He never wants to listen to students.
B. C. He used to teach biology. D. He is an excellent professor.
一台计算机可能会有多种多样的指令，这些指令的集合就是______。
设置幻灯片的“水平百叶窗”、“盒状展开”等切换效果时，不能设置切换速度。( )
A. 对
B. 错
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