填空题,100分] When you wave (挥手) to a friend, you ar

填空题,100分] When you wave (挥手) to a friend, you are using sign language. When y

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真理就是客观事物内在的、真实的规律与本质。A.√B.×

真理就是客观事物内在的、真实的规律与本质。A.√B.×

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