Ex1: Viết lại câu sao cho nghĩa ko đổi: 1/ Although he got up early , he was late for scholl +Despite 2/ Although my friend does'nt have enough money , she wants to buy that new car +Despite 3/ Although Mai did'nt speak English well , she decided to live in London + Despite 4/Although Lan was tired , she did all her homework carefully + Despite

e mong anh chi giai giup e bai 2 e dang can gap a

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Cho a,b∈Za,b∈Z và aa là một số nguyên dương thỏa mãn tích của chúng là một số nguyên dương. Ai cho mk vào nhóm với ạ

Câu 1. (4 đ): a. Quang hợp là gì? Trình bày ý nghĩa của quang hợp? b. Tại sao phải trồng cây nơi có đủ ánh sáng? Câu 2 (3 đ): a. Nêu ý nghĩa của hiện tượng thoát hơi nước qua lá? b. Tại sao những ngày nắng to, gió mạnh, tiết trời khô hanh ta cần tưới nhiều nước cho cây? Câu 3 (3 đ): a. Hãy kể các loại quả chính em đã học? Lấy ví dụ với mỗi loại quả? b. Tại sao khi thu hoạch đỗ đen, chúng ta không để quả chín quá lâu trên cây?

giả sử a,b,c là các số nguyên dương sao cho ba phân số a/b+2c , 2b/c+5a , 3c/2a+7c bằng nhau . Tìm dạng tối giản của mỗi phân số đó

Đọc đoạn văn sau và trả lời câu hỏi: Dân ta có một lòng nồng nàn yêu nước.Đó là một truyền thống quý báu của dân tộc ta.Từ xưa đến nay,mỗi khi Tổ quốc bị xâm lăng,thì tinh thần ấy lại sôi nổi, nó kết thành một làn sóng vô cùng mạnh mẽ,to lớn,nó lướt qua mọi sự nguy hiểm,khó khăn,nó nhấn chìm tất cả lũ bán nước và lũ cướp nước. a/hãy chỉ ra câu văn nêu luận điểm của đoạn văn. b/Nêu nội dung chính của đoạn văn trên c/Trong câu cuối của đoạn văn tác giả sử dụng biện pháp tu từ nào để diễn tả sức mạnh tinh thần yêu nước?Nêu tác dụng? d/Chỉ ra các động từ sử dụng trong câu cuối của đoạn văn?Nêu tác dụng?

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I. Change sentences into the passive (Present simple): 1. Mr Hai delivers the letters everyday. - ................................................ 2. The children often buy the tickets at the box office. - ...................................................... 3. They usually finish their homework before bed time. - ..................................... 4. The teacher corrects our exercises today. - ................................................... 5. We often watch the shows of music on TV . - ...................................... 6. We do a written test today. - ......................................... 7. Everyone always see the Picasso's exhibition . - .................................................... 8. The workers clean the streets everyday. - ............................................... 9. Careless driving causes many accidents. - ....................................... 10. Weeds cover the river bank. - ...................................... II. Change sentences into the passive ( Past simple). 1. Mrs Allen wrote that novel in 1998. - ............................. 2. Nam borrowed the reference book from the shelf yesterday. - ................................... 3. The boy ate two loaves of bread last sunday. - ............................... 4. He left the letter on the desk some minutes ago. - ............................................. 5- My mother bought a new bike for me last month. - .............................................. 6- Our form teacher returned our written test to us last lesson. - .......................................... 7- The Chinese invented paper in the century A.D. - ............................................. 8- Vietnamese planted trees in their neighborhood a year ago. - ....................... 9- My sister did the housework yesterday. - .................................. 10- The publisher published his book in 1996. - ........................................... 11- They repaired our desk during the weekend. - ............................................ 12- Jack London wrote the novel "Martin Idon". - ................................... III. Find the mistake in these sentences and fix the mistake. 1. Five suspects have be arrested by the police. 2. He was ordered by the doctor to take an long rest. 3. A dancing class was start last week. 4. He were found in the forest by the police. 5. A car is going to been bought tomorrow. 6. These drugs are be destroyed by police. 7. I'm from Russia and my family born there . IV. Circle the best answer. 1. My room _________________________ in the house by her now. A. is being cleaned B. are being cleaned C. will be cleaned D. would be cleaned 2. Tom ___________________________ by Mary since 10 o'clock. A. has operated B. have been operated C. has been operated D. All are wrong. 3. Someone __________________ to take his place. A. must be find B. might be find C. should be finds D. must be found 4. 20 demonstrators ________________________ by the police. A. was arrested B. were arrested C. was arresting D. A & B 5. That book ______________________ by Tom yesterday. A. were bought B. bought C. A & B D. was bought 6. Much of the city ______________________ by fire in the 17th century. A. was destroyed B. is destroyed C. are destroyed D. were destroyed 7. Work _________________________ by the teacher. A. are being watched B. was being watched C. is being watched D. B & C 8. My house __________________ red and blue. A. are painted B. is painted C. was painted D. All are wrong. 9. The grain _________________ to the factory, where it _______________ and __________. A. are taken / cleaned / is checked B. is taken / is cleaned / is checked C. was taken / was cleaned / was checked D. is taken / is cleaned / checked 10. Jag Niwas _______________________ by Prince Maharana Jagat Singh II. A. were built B. are built C. was built D. is built 11. The wall _______________________ before you paint it. A. must be cleaned B. should cleaned C. might been cleaned D. No answer is right 12. The Garden of Clear Ripples ___________________ by The Qing Emperor Quinlong in the middle of the 16th century. A. designed B. was designed C. were designed D. B & C 13. This computer _________________________ to use A. will be continued B. would continued C. should continue D. must continues 14. A lot of food _____________________ these days. A. are thrown B. were thrown C. is thrown D. was thrown

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