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dinhvannamntt
2 năm trước
Một ống làm bằng thép dài 30m. Khi 1 em học sinh dùng búa gõ vào 1 đầu ống thì 1 em học sinh khác đặt tai ở đầu kia của ống nghe thấy 2 tiếng gõ : tiếng nọ cách tiếng kia 0,08s. a) giài thích tại sao gõ một tiếng mà lại nghe được 2 tiếng b) Tìm vận tốc truyền âm trong thép, biết vận tốc truyền âm trong không khí là 340m/s và âm truyền trong thép nhanh hơn âm truyền trong không khí. _Các bạn ơi giúp mình với. mình cảm ơn ạ
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UNIT 10: STAYING HEALTHY I. Fill in the blanks with a, an, some or any 1. There is ………………. TV set on the table. 2. Dung is hungry. She would like …………….. chicken and ……………. rice. 3. That is …………………… onion. 4. There aren’t ……………………. oranges in the fridge. 5. Son wants ………………… ice-cream after dinner. 6. Van is ………….. weight lifter. 7. There are ………………. flowers in the vase. 8. There isn’t ……………. water in the bottle . 9. There is …………….. apple in his schoolbag. 10. There isn’t …………………. milk in the jar. 11. Mrs.Yen wants ……………….. beans. 12. Lan has …………………….. bike. 13. No, there aren’t ………………….. noodles. 14. Would you like …………………. iced tea, Trang ? 15. Is there any ………………… meat for dinner ? II. Make question for the underlined words. 1. They are tired and hot. →………………………………………………………………………… 2. I’d like some orange juice,please. → ……………………………………………………………. 3. No, there aren’t any cabbages for lunch. → ………………………………………………………………………………………………………. 4. These are carrots and onions. →………………………………………………………………….. 5. No, they aren’t hungry. →………………………………………………………………………... 6. My brother is doing his homework. →…………………………………………………………… 7. Mr.Binh would like some tomatoes.→…………………………………………………………… 8. There is some water.→…………………………………………………………………………… 9. Miss.Lorna’s hair is blond.→…………………………………………………………………….. 10. Mai’s favourite drink is apple juice.→…………………………………………………………… 11. She is cooking in the kitchen. →…………………………………………………………………. 12. The children are going to the zoo now ?→……………………………………………………….. III. Put the words in the correct order. 1. very / it / and / is / hungry / I’m / 8 p.m / →……………………………………………………… 2. and / the / thirsty / after / feel / game / tired / I /. →……………………………………………………………………………………………………….. 3. water / isn’t / here / there / any /.→………………………………………………………………. 4. for / are / lunch / noodles / there / some /. →…………………………………………………….. 5. and / like / they / rice / dinner / would / some / chicken / for /. →………………………………………………………………………………………………………. 6. Lan’s / drink / is / apple juice / favorite /.→……………………………………………………… IV. Fill in the passage with a suitable word •It is half past eleven now, and Trang is very …………………. . She would like some noodles to …………………. . Her …………………… food is rice , fish and vegetables. When she is ………………….. , she often …………………… orange juice or apple juice. She has …………….…… rice, meat and vegetables ………………………… lunch. She drinks …………………. Water after lunch. She also ………………….. some fruit: bananas, oranges or apples. She doesn’t …………………. coffee or tea. She likes milk . •Ba is a student in grade 6. His favorite …………………. is fish. He likes chicken and meat,too. He always …………………… lemonade in the afternoon. He …………………... bread, milk …………………. breakfast. He has fish, meat …………….……….. rice for lunch. He has vegetables for lunch,too. He wants to ……………….……… potatoes, cabbages, beans and tomatoes. He ………………. not like lettuce and peas. He doesn’t drink tea and coffee. ……………………. aren’t good for children. V. Fill in the blank with correct preposition 1. Linh has a hat ……………………. her head. 2. The visitors arrive ……………….. Viet nam ………………… Tan Son Nhat Airport. 3. My brother is good ……………… Math and Physics. 4. We have meat, soup and beans …………………… lunch. 5. I often buy pens ………………… the bookstore. 6. The students are waiting ………………….. their teacher. 7. Are you free …………………. Sunday ? 8. Lan has a small house …………………… Hue.

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