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tranduongbaongoc
2 năm trước
Tính khoảng cách ngắn nhất từ người nói đến bức tường để nghe tiếng vang , biết vận tốc của âm trong không khí là 340m/s và để nghe được tiếng vang thì âm phản xạ và âm trực tiếp cách biết nhau ít nhất 1/15giây
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Ex1: Use adjectives ending with “-ed/ -ing” from the verbs given in brackets to complete the following sentences: 1. The kitchen was in a_______________ state when she left. ( disgust) 2. Jim had an accident yesterday and his situation is _______________. (worry) 3. The result of her exam is very _______________. ( disappoint) 4. This is the most_______________ film I have known. (thrill) 5. Everyone was _______________ at her new hair. (surprise) 6. What is the most _______________ creature in the world? (frighten) 7. Jane gave up her part-time job because it was too _______________(exhaust) 8. The rainforests are disappearing at an _______________ rate. (alarm) 9. They are never_______________. They are always complaining. (satisfy) 10. My teacher was very _______________that I studied hard. (please) 11. I was deeply _______________ by the news. (disturb) 12. It was _______________ outside. You should put on thick coat before going out. (freeze) 13. My parents always give me a warm_______________ hug whenever I get home. (welcome) 14. Students easily get _______________. (distract) 15. Jane appeared _______________ and confident before the interview. ( relax) Ai trả lời đc cho 5 sao

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