问题
单项选择题
A （） consists of the symbols, characters, and usage rules that permit people to communicate with computer.
A．programming language
B．network
C．keyboard
D．display
答案
参考答案：A
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A （） consists of the symbols, characters, and usage rules that permit people to communicate with computer.
A．programming language
B．network
C．keyboard
D．display
参考答案：A