1 trong 2 nhá mọi ng ơiiiiiiiiiii Cứu e với :((((

một xe máy đi từ a đến b với vận tốc 40km/h khi quay trở về người đó đi với vận tốc 60km/h.vì vậy thời gian về ít hơn thời gian đi là 30 p .tính quãng đường ab Tại sao suy ra t1 - t2=1/2 hay S/40 - S/60 = 1/2 suy ra S=60 (km) vậy AB dài 60km Mình không hiểu

9. I started learning English three years ago. ÊI have………………………………..…..……………………… 10. Could you give me that book? ÊWould you mind………………………………..…..……………………… 11. Sue is the most intelligent in her class. ÊNo one………………………………..… 12. “Can you close the door for me?” Mai said to Minh. ÊMai asked Minh.....………………………………..… 13. No one has used this room for years. Ê This room.........………………………..…..… 14. This question is difficult to understand. ÊIt’s.........………………………………..… 15. Many people in the world speak English. ÊEnglish……………………………………

Giúp mình với mình cần gấp Cảm ơn mn Mình sẽ đáng giá 5 sao nhé cho người nhanh nhất

Circle the word whose underlined part is pronounced differently from the others 1. A. health B. meat C. read D. teach 2. A. cucumber B. sugar C. durian D. music 3. A. add B. amount C. championship D. paddle 4. A. virus B. disease C. like D. mine II. Match the questions in column A with suitable answers in column B A B 5. Would you like to come to my party? 6. What did you see on your trip to Nha Trang? 7. What’s your height? 8. What do you like doing in your free time? A. So does my sister. B. I’d love to. What time? C. I like playing chess. D. one meter 45 centimeters. E. I saw many different types of fish. III. Choose A, B, C or D to complete the following sentences 9. My brother doesn’t like pork and ------------------ A. either do I B. neither do I C. neither I do D. I don’t too 10. I don’t like coffee.Namdoesn’t like it ------------ A. so B. too C. either D. neither. 11. He ------------ to the zoo last Sunday. A. went B. goes C. go D. to go 12. My father is a ------------- football player. A. skill B. skillful C. skillfully D. skills 13. The students of Class 7A have three _______ a day. A. 15-minute break B. 15-minutes break C. 15-minutes breaks D. 15-minute breaks 14. There are ----------- art galleries in this city. A. a number of B. a great deal C. a many D. lots 15. What kinds of ------------- do you like? - I like cartoons. A. films B. books C. pictures D. magazines 16. You should ----------- your hands before meals. A. wash B. washed C. washes D. to wash IV. Choose words in the box to complete the dialogue Doctor headache better did Hoa: What was wrong with you last night? Lan: I had a (17) ------------- Hoa: Did you go to see a (18) --------------- Lan: Yes, I (19) ----------. Now I feel (20)------------- V/ Read the text carefully and answer the questions In summer holidays, Mr. Hung, Mrs. Chi and their children, Tuan and Hoa often go to the beach for two or three days. They always go to Vung Tau in the south ofViet Nam. They usually stay in a small house or a flat by the sea, but sometimes they stay in a hotel. Last summer, they went to Nha Trang. They stayed at Sunshine hotel for three days. In the morning, Tuan played football with his father on the beach. Hoa and her mother walked along the beach and built sandcastles. They visited Tri Nguyen Aquarium and saw different kinds of fish there. They also bought a lot of souvenirs for friends. A. True(T)/ False(F) sentences 21. Mr. Hung, Mrs. Chi and their children often go to the beach for their summer holidays. 22. They often go there for four days. 23. They usually stay in a hotel. 24. They saw different kinds of fish. B. Answer the questions 25. Where did they go last summer? 26. What did Hoa and her mother do there in the morning? 27. What did they see at Tri Nguyen Aquarium? 28. Did they buy a lots of souvenirs for friends? VI. Choose the words or phrases that are not correct in standard English 29. I didn’twroteanypostcards 30. He is hungry, so he have to find something to eat VII. Rearrange the words to make meaningful sentences 31. you/ get/ up/ did/ early/ ? /. ..................................................................................................... 32. nice/ a/ neighbor/ what/ !/. ..................................................................................................... VIII. Make the questions for the underlined words 33. My sister hates durians. ..................................................................................................... 34. They went to Ha Noi by train. .....................................................................................................

đường thẳng y=7x-13 cắt 2 trục tọa độ tại 2 điểm M,N tính diện tích tam giác OMN

Đọc đoạn trích sau và trả lời câu hỏi: "Bên cạnh ngài, mé tay trái, bát yến hấp đường phèn, để trong khay khảm, khói bay nghi ngút, tráp đồi mồi chữ nhật để mở, trong ngăn bạc đầy những trầu vàng, cau đậu, rễ tía, hai bên nào ống thuốc bạc, nào đồng hồ vàng, nào dao chuôi ngà, nào ống vôi chạm, ngoáy tai, ví thuốc, quản bút, tăm bông trông mà thích mắt. Chung quanh sập, bắc bốn ghế mây, bắt đầu từ phía hữu quan thì có thầy đề...cùng ngồi hầu bài". Câu 1: Đoạn văn sử dụng nghệ thuật gì là chủ yếu? Qua đó tác giả muốn thể hiện diều gi? Câu 2: Thành phần in đậm (Bên cạnh ngài, mé tay trái / Chung quanh sập) là thành phần gì của câu? Nêu tác dụng của chúng trong câu?

1. Keeping the environment clean is very important. ÊIt’s……………………………………………………… 3. It’s three years since I last spoke to her. ÊI haven’t………………………………………………….………… 1. How long is it since you used the car? ÊWhen …………………………………………………….………….. 5. We started living here 15 years ago. ÊWe have………………………………………………………………... 6. We can’t drink the water because it’s too hot. ÊThe water isn’t………………………………… 7. It has been raining for five hours. ÊIt started………………………………………………...………………… 8. To help mom at home is a good activity. ÊIt is………………………………..…..……………………………

kể tên các động vật trên cây phát sinh

Ở thực vật thujtinh kép tinh tử 1 kết hợp vs tế bào trứng tạo tế bào nào sau đây A Hợp tử 2n B noãn C nội nhũ 2n D nội ngữ 3n