Which of the following statements indicate the significance of the appearance of chopsticks?

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A.The use of chopsticks featured the coming of civilization to food culture.

B.The appearance of chopsticks indicated the scientific advancement in ancient China.

C.The use of chopsticks was a living example of the application of the lever principle of mechanics.

D.The appearance of chopsticks declared the discovery of a great scientific theory.

参考答案:

答案：The use of chopsticks featured the coming of civilization to food culture.；The use of chopsticks was a living example of the application of the lever principle of mechanics.

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Which of the following statements indicate the significance of the appearance of chopsticks?

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