Current location - Recipe Complete Network - Complete recipe book - People are sitting on a rubber raft drifting with the fast-flowing river. People are _ _ _ _ _ relative to the river bank, and _ _ _ _ _ _ is static. Studying the same person, we choose _ _ _ _ _
People are sitting on a rubber raft drifting with the fast-flowing river. People are _ _ _ _ _ relative to the river bank, and _ _ _ _ _ _ is static. Studying the same person, we choose _ _ _ _ _
People drift with the swift river on the rubber raft, and their position relative to the river bank has not changed, so taking the river bank as a reference, people are moving.

However, the position of man and the rubber raft has not changed, so taking the rubber raft as a reference, man is still;

Studying the same person and choosing different reference objects will lead to different research results.

Therefore, the answer is: exercise; Rubber raft; Reference.

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