Giải HPT: $\left \{ {{2x+y=5} \atop {x-y=1}} \right.$

Giúp mik với ạ . Mik cần gấppppppp

Bài 1 triển khai luận điểm sau đây thành đoạn văn A đoạn thơ : Ngày hôm sau .... thân bạc trắng là khung cảnh tấp nập rộn ràng đầy hạnh phúc khi đoàn thuyền đánh cá trở về Mn giúp Mk nhanh nhé

Các bạn giúp mình làm bài này với : speaking English topic Howto reduce traffic accident

“Irregular cycles or periods” là gì? (Ko tra bằng Google Dịch nha)

Cho ABC vuông tại A, có AB = 12 cm ; AC = 16 cm. Kẻ đường cao AH (H ∈ BC). a) Chứng minh: HBA ഗ ABC b) Tính độ dài các đoạn thẳng BC, AH. c) Trong ABC kẻ phân giác AD (D ∈ BC). Trong ADB kẻ phân giác DE (E ∈ AB); trong ADC kẻ phân giác DF (F ∈ AC).

i. Rewrite these sentences, using preposition + WHO / WHOM : 1. The movie was interesting. We went to it. 2. I couldn’t understand the woman. I talked to her on the phone. 3. I want to tell you about the party. I went to it last night. 4. The music was gentle. We listened to it last night. 5. Alice likes the foreign family. She is living with them. 6. The market has refresh vegetables. I usually go to it. 7. The man is over there. I told you about him. 8. The film is fantastic. They are talking about it. 9. She’s the nurse. We gave the flowers to her. 10. We are speaking to the man. The man was our new history teacher.

iii. Combine these sentences, using WHICH, WHERE, WHEN : 1. Ha Noi is the place. I’d like to come to Ha Noi. 2. Summer is the time. The weather is very hot then. 3. The bed was comfortable. I slept in it last night. 4. I never forget the park. We met each other for the first time at this park. 5. I do not know the reason. She left school for it. 6. We have not decided the day. I’ll go to London on that day. 7. Our school has a good laboratory. The students practice chemistry in the laboratory. 8. Our school has a good laboratory. Mr John designed it in 9. 7:30 is the time. My plane will arrive then. 10. I love my parents’ house. I was born in that house.

ii. Reduce relative clauses: 1. Be sure to follow the instructions that are given at the top of the page. 2. Students who arrive late will not be permitted to enter the classroom. 3. John, who was taken by surprise, hardly knew what to say. 4. The people who are waiting for the bus in the rain are getting wet. 5. We drove along the road that was still flooded after the heavy rain. 6. The scientists who are researching the causes of cancer are making progress 7. The wild ox which is kept at Nam Cat Tien National Park is of a special kind 8. The helicopter which was flying toward the lake made a low droning sound. 9. The winner of the marathon, who was breathing deeply and smiling at the crowd, raised her right hand and waved. 10. Any student who does not want to go on the trip should inform the office.

RELATIVE CLAUSES i. Rewrite these sentences, remember to put commas in their right place : 1. Smallpox has disappeared. It once killed thousands of people every year. 2. This is Felicity. You met her sister last week. 3. He swam across the English Channel. It is hard to believe that. 4. Borges was a wonderful writer. He never won the Nobel Prize. 5. Charlie Chaplin died in 1977. His films amused millions. 6. Dr Oley is our family’s dentist. He is a popular dentist in the city. 7. His sisters are identical twins. I saw them last 8. The river is the Sai Gon River. It flows through Ho Chi Minh City. 9. The girls are performing the play. They rehearsed it yesterday. 10. Their parents are anxious about their children. The children come back late