bài tham luận gdqp an ninh: em hãy trình bày trách nhiệm của học sinh với nghĩa vụ bảo vệ an ninh tổ quốc? liên hệ thực tiễn

Câu 3: Tính thành phần % khối lượng của các nguyên tố có trong mỗi hợp chất sau: a.C3H8 b. C4H9Br

Giúp mk vs Giải các phương trình sau: 4(x-5)-(3x-1)= x-19

2. Tổng của tử số và mẫu số bằng 4812 . Sau khi rút gọn ta được phân số bằng 5 7 . Hãy tìm phân số khi chưa rút gọn. Giup em toi nay phai nop cho co

Cho tam giác ABC có 3 góc nhọn nội tiếp (O;R). Các đường cao BE và CF cắt nhau tại H a) C/m AEHF và BCEF nội tiếp b) Gọi M và N lần lượt là các giao điểm thứ hai của (O;R) với BE và CF. C/m MN // EF c) C/m OA vuông góc EF LÀM GIÚP MÌNH Ý C VỚI NHÉ. MÌNH CẢM ƠN

Phân tích đa thưc thành nhân tử 4x²-8xy+4y²

Up to now, the teacher...… (give) us 5 tests. => Has given Tại sao lại là "Has" mà không phải "Have" vậy mọi người??

1. The movie on TV last night made me . A. bore B. boring C. bored D. boredom 2. I was to learn that the director of that gripping film has won the first prize. A. interest B. interests C. interested D. interesting 3. We were with the latest film of that director. A. Satisfy B. satisfying C. satisfactory D. satisfied 4. They were very disappointed her acting. A. of B. with C. in D. on 5. Lets go to the Victor Cinema. I’m sure you'll find the film . A. excites B. excite C. excited D. exciting 6. Mr. Beans Holiday is a film - I was laughing from beginning to end. A. hilarious B. violent C. scary D. moving /t/ /d/ /id/ 7. We are really about going to the cinema tonight. A. excited B. interested C. amused D. pleased 8. The film was so . However, my father saw it from beginning to end. A. interesting B. exciting C. boring D. fascinating 9. We found the plot of the film . A. bored B. boring C. interested D. acting 10.The cinema changed completely at end of 1920s. A. an – the B. the - a C. a - the D. the - the 11.I enjoyed the film on TV yesterday evening nobody in my family liked it. A. although B. yet C. in spite of D. so 12.Last night, I didn’t go to bed early being very tired. A. despite of B. in spite of C. although D. because 13.I thrillers to action films. A. like B. prefer C. would rather D. enjoy 14.We like the film very much. The are unforgettable and the plot is gripping. A. characters B. acting C. style D. action 15.A is a film that tries to make audiences laugh. A. Horror B. sci-fi C. comedy D. documentary

Khi đốt khí metan(CH4), khí axetilen(C2H2), rượu etylic(C2H6O) đều cho sản phẩm là cacbonic và hơi nước. Hãy viết phương trình hóa học của các phản ứng trên

7 Choose the underlined part A, B, C or D that needs correcting. Picture 5 A: A B: B C: C D: D 8 Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges. Question 13. Helen: “What a lovely house you have!” Mary: “__________________” A: I think so. B: Of course not. it’s not costly. C: No problem D: Thank you. Hope you will drop in. 9 Choose the best answer A, B, C or D to complete the sentence. Question 10. From 1865 to 1875, a remarkable _______________ of inventions was produced. A: variety B: collection C: diversity D: mixture 10 Choose the best answer A, B, C or D to complete the sentence. Question 11. Alexander Graham Bell was a great___________, who invented the telephone. A: scientist B: conservationist C: developer D: explorer 11 Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits blank (17). Do you know about the history of Jeans? Jeans are very popular with (17)________people all over the world. Some people say that jeans are the “uniform” of youth. But they haven’t always been popular. The story of jeans (18)________almost two hundred years ago. People in Genoa, Italy made pants. The cloth made in Genoa was (19)________“jeanos”. The pants were called “jeans”. In 1850, a salesman in California began selling pants made of canvas. His name was Levi Strauss. Because they were so strong, “Levi’s pants” became (20)________with gold miners, farmers and cowboys. Six years later Levis began making his pants with blue cotton cloth called denim. Soon after, factory (21)________in the US and Europe began wearing jeans. A: rich B: old C: young D: poor 12 Choose the word whose stressed pattern is pronounced differently from the others. A: negative B: immature C: creativity D: nationality 13 Choose the correct sentence (A, B, C or D) that has the same meaning to the given one. Question 25. They have built a new school in our village recently. A: A new school has been built in our village recently B: A new school has built in our village recently. C: A new school was built in our village recently. D: A new school has to be built in our village recently. 14 Choose the best answer A, B, C or D to complete the sentence. Question 9. What __________________ if you saw a UFO? A: did you do B: do you do C: would you do D: will you do 15 Choose the underlined part A, B, C or D that needs correcting. Picture 4 A: A B: B C: C D: D