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Toán học - Lớp 7

18/07/2025 21:54:43

Rút gọn biểu thức: B = (2x + 3y) − (x − 4y) + 5

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Toán học - Lớp 7

18/07/2025 21:53:24

Bài 4. (Hình học – Định lý tổng ba góc tam giác) Cho tam giác ABC có góc A = 40°, góc B = 60°. Tính góc C

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Toán học - Lớp 8

18/07/2025 21:52:32

Bài 1. (Đại số – Biểu thức đại số)Rút gọn biểu thức: A = 3x − 5 + 2x + 7 − x

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Tiếng Anh - Lớp 8

15/07/2025 22:02:40

EXERCISE 1: Fill in the gap with the prepositions of movement providedOff | Around | Along | Into | Across | Up | Out of | Over | Down | Through1. We walked __________ to the top of the mountain and then we cycled ___________ to the bottom again.2. We both jumped ____________ the swimming pool at the same time.3. When I finished high school I drove ______________ Europe in a caravan with two of my friends.4. The athletes ran _____________ the track for 1 hour.5. You must always wear a helmet when you cycle in case you fall __________ the bike.6. The first person to swim __________ the English Channel was Mathew Webb, in 1875.7. Ferdinand Magellan was a Portuguese sailor who sailed __________ the world in the 16th Century.8. In PE classes we have to climb ____________ a rope in 20 seconds.9. He was skiing ____________ the hill when he had the accident.10. I would never do base jumping. I think it's really dangerous to jump ___________ a building even if you have a parachute.11. The boat

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Tiếng Anh - Lớp 8

15/07/2025 22:02:20

EXERCISE 3: Rearrange the following words to make meaningful sentences.1.The / park / are / playing / outside / at / the / children.__________________________________________________________________2.There / a / is / cup / of / coffee / on / the / table.__________________________________________________________________3.The / friends / apartment / live / in / an.__________________________________________________________________4.She / will / cinema / at / us / the / meet.__________________________________________________________________5.The / hiding / box / in / cat / is / the.__________________________________________________________________

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Tiếng Anh - Lớp 8

15/07/2025 22:01:57

Fill in the gap with a suitable preposition

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Tiếng Anh - Lớp 8

15/07/2025 22:01:21

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Tiếng Anh - Lớp 8

15/07/2025 21:57:31

EXERCISE 4: Fill in each blank with the correct preposition.1. The price of electricity is going up _____ August . 2. They came to visit us _____ my birthday . 3. Did you have a good time _____ Christmas? 4. The children are really excited _____ their summer vacation . 5. We were very disappointed _____ the organization of the festival . 6. John missed a lot of lessons. He was ill _____ January to March . 7. Helen had said goodbye to everybody in the class _____ she left for the hometown . 8. My cat is very fond _____ fish . 9. I waited _____ 10 o’clock and then went home . 10. I can’t remember exactly when the accident happened. I think it was _____ nine and half past nine . 11. Are you acquainted _____ the lady? 12. _____ the children left, the house was very quiet . 13. Thes e photographs were taken _____ a friend of mine . 14. The river Rhine flows _____ the North sea . 15. I shall meet you _____ the corner _____ the street . 16. I always come _____ school _____ foot . 17. He had

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Tiếng Anh - Lớp 8

15/07/2025 21:50:41

EXERCISE 2: Fill in the gap with suitable prepositions of movement. 1. I flew from San Francisco_____________Zurich with Swiss International Air Lines. 2. Our class walked_____________a beautiful forest during our last school trip. 3. The cat was on the table; then it jumped_____________the floor. 4. We got_____________the car and ran_____________the building

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Toán học - Lớp 7

12/07/2025 21:11:01

Khai triển các biểu thức sau

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