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Với cùng một công suất truyền đi, công suất hao phí do tỏa nhiệt trên đường dây tải điện sẽ thay đổi như thế nào nếu tăng tiết diện dây dẫn lên 3 lần? M.n giúp với ạ mik cảm ơn
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Name:………………………. HOMEWORK ( No1- week 2) Class: 8……. Mark Teacher ‘s comment A. PHONETICS I. Choose the word that has the underlined part pronounced differently from the others. 1.​A. paddy​B. sand​C. travel​D. tribal 2.​A. buffalo​B. photo​C. limestone​D. botanical 3.​A. jungle​B. luggage​C. sunbathe​D. sugar 4.​A. around​B. various​C. sound​D. mountains 5.​A. heritage​B. giant​C. garden​D. village B. VOCABULARY AND GRAMMAR II. Complete the sentences, using the correct form of the words in brackets. 1.​People believe that the ​​​ water has brought cancer to the local residents. (pollute) 2.​Light pollution make us ​​​ to see the stars in the sky. (able) 3.​Noise is considered as ​​​ pollution. (environment)​​ 4.​​​​ habitats have been destroyed in recent years. (nature) 5.​A number of cleaning products contain ​​​ chemicals. (harm) 6.​Water samples collected at these villages were seriously​ ​​​ with bacteria. (contaminate) 7.​An ​​​ of agrochemicals is pesticides. (illustrate) 8.​Contaminants are usually ​​​ to aquatic plants. (poison) 9.Water ________________ in the lake has made the fish die. (pollute)​ 10. Water pollution is the _________ of body water of lake, river, oceans.(contaminate) III. Complete the sentences with the correct verb form in the bracket. 1.​If someone offered to buy you one of those rings, which you (choose) ​​​? 2.​The flight may be cancelled if the fog (get) ​​​ thick. 3.​If the milkman (come) ​​​, tell him to leave two pints. 4.​I (call) ​​​ the office if I were you. 5.​Someone (sit) ​​​ on your glasses if you leave them there.

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