Câu 1: Vẽ sơ đồ mạch điện gồm: nguồn điện 2 pin nối tiếp, 1 ampe kế, 1 khóa K (đóng), 1 bóng đèn, các dây dẫn. Hãy xác định các cực của nguồn điện, các chốt của ampe kế và chiều dòng điện trong mạch. Câu 2: Vào những ngày thời tiết hanh khô, khi ta chải đầu bằng lược nhựa, nhiều sợi tóc bị lược nhựa hút kéo thẳng ra. Giải thích vì sao? Câu 3: Đổi đơn vị cho các giá trị sau đây: a) 425 mA = ………… A b) 0,5V = …………. mV c) 220 V = …………. kV d) 0,3A = ………… mA

Mấy bạn cho mình hỏi hệ phương trình ax+by=c và a'x+b'y=c' có nghiệm duy nhất khi nào, có vô số nghiệm khi nào và vô nghiệm khi nào? ( giúp mình trả lời, mình vote 5 sao nha^^)

III. LANGUAGE FOCUS 1. Choose the word whose underlined part is pronounced differently from the others’. Circle A, B or C. 1. A. hot B. pot C. sport 2. A. short B. port C. fold 3. A. four B. pour C. soup 4. A. tofu B. score C. morning 5. A. how B. tomorrow C. flour

Giúp mình với ,mình đang cần gấp

Giúp mik bài 6 vs mik ko bik Các bn toàn giúp người khác chứ ko giúp mik. Mik dỗi đây

5. The wind is blowing very hard and one of the big trees in the garden is making strange creaking noises. A. it is going to rain B. the tree is going to creak C. the tree is going to fall down 6. The room is full of dust and John is holding his nose and making a strange expression with his face. A. John is going to clean the room B. John is going sneeze C. John is going to sneeze 7. The Chicago Bulls are winning the basketball match against the Los Angeles Lakers by 98 points to 81. There are only 90 seconds left. A. the LA Lakers going to lose the match B. the Chicago Bulls will winning the match C. the Chicago Bulls are going to win the match 8. It is raining and the sky is very dark. The temperature is falling very quickly and there are gritting lorries out in the town. A. there is going to be bad weather B. it is going to snow C. it is going to cold

Cảm ơn mn và vote 5 sao nha 1.The photos ................... in a London studio last week. A. were taken ​B. have taken ​C. was taken ​D. have been taken 2.The car ................... by my father yesterday. ​A. were washed ​B. was washed​C. washed ​D. has been washed 3.A railway bridge has already....................over the river. ​ ​A. been erected ​B. erecting ​C. in construction ​D. being built 4. ​When the boy ................... the car he was badly injured. ​A. is hit by ​B. was hit by​C. hit ​D. was hitting 5.The new motorway ..................... and built last year. ​A. planned​B. was planned​C. was planning​D. had planned 6.Many mistakes ......................... made. ​A. has been just​B. have just been ​C. is just ​D. to be just 7.His father gave him a very expensive cell phone on his last birthday. ​A. He is given a very expensive cell phone on his last birthday. ​B. He was given a very expensive cell phone on his last birthday. ​C. He had been given a very expensive cell phone on his last birthday. ​D. He has been given a very expensive cell phone on his last birthday. 8.What will happen if the air....................... ? ​A. was polluted ​B. be polluted ​​C. is polluted​D. has polluted 9.They are building a new zoo near my village. ​A. A new zoo is being built near my village. B. A new zoo will be built near my village. C. A new zoo is built near my village.​ D. A new zoo is being building near my village. 10.Most forests in other climatic areas.......................by human beings. ​A. had already been affected ​​B. have already been affecting ​C. have already affected ​D. have already been affected

mọi người ơi giúp mk vs ạ .mk đang cần gấp

Viết đoạn đối thoại trong đó có sử dụng các kiểu câu đã học : câu trần thuật . , câu nghi vấn , câu cảm thán , câu cầu khiến và câu phủ định

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