单项选择题

实数开方指令的梯形图操作码是（）。 A. EXP B. LN C. SQRT D. TIN

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单项选择题

单项选择题

What is implied in the passage?
A、A. People started to associate colors with emotions long time ago.
B、B. How colors show emotions is a new research topic.
C、C. People wearing different colors usually feel happy.
D、D. The colors people choose affect their physical health.