Language is a symbol system, a system of vocabulary building materials and grammatical organization rules combining sound and meaning with speech as the material shell and semantics as the meaning content. According to the above definitions, which of the following is language:. ['Mute or sign language, a symbol system produced by the communication needs of the deaf, using fingers or gestures as a carrier.', 'Oracle, text from the Shang Dynasty in China.', 'Machine language is a computer language expressed directly in binary code instructions.', 'Hebrew, the national language of the Jews, is one of the oldest languages in the world.']