A．signsB．signalsC．gesturesD．symbols

Science and technology cannot do without symbolic systems. Symbolic systems （).A. ar

以下不是符号Symbol可选的类型的是（)。A.MovieClipB.ButtonC.EffectD.Graphic

What does a car mean to a man, according to the passage？A．The symbol of power.B．The symbol

【C10】A．visualsB．signalsC．numbersD．gestures

What is the duality of the language？A．Letters and sounds.B．Sounds and symbols.C．Symbols an

【C9】A．signsB．gesturesC．signalsD．marks