In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the reception of such waves and their perception by the brain.
Last Sunday, I was at home. In the morning, I first did some housework. I cleaned my room and watered flowers. Around nine o'clock, I visited my friend, Miss Xu. Then we went shopping together. At noon, we had lunch at KFC. After lunch we watched a new movie. We really liked the movie. In the evening, Miss Xu cooked a lot of good food. We were very happy.
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In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the reception of such waves and their perception by the brain.
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Answer:
Last Sunday, I was at home. In the morning, I first did some housework. I cleaned my room and watered flowers. Around nine o'clock, I visited my friend, Miss Xu. Then we went shopping together. At noon, we had lunch at KFC. After lunch we watched a new movie. We really liked the movie. In the evening, Miss Xu cooked a lot of good food. We were very happy.
Explanation: