Trong phân tử axetilen giữa 2 nguyên tử cacbon có

nhà Ngô có bao nhiêu đơn vị hành chính

Nêu ưu nhược điểm của giáo dục vm

Đánh giá những đóng góp của Phan Châu Trinh đối với công cuộc đấu tranh giải phóng dân tộc việt Nam đầu thế kỉ XX

giải hộ mình với .........................

Xác định a,b,c để: x^4 +ax^2+b bằng (x^2-3x+2).(x2+cx+d) với mọi x

Trình bày nên công nghiệp châu âu

III. Choose the correct answer. 1. A sky safety system will stop everyone crashing in the sky. A. at B. from C. through D. for 2. regular light bulbs with low energy light bulbs, which use less energy. A. Turn B. Replace C. Place D. Put 3. We can the problem of energy shortage by using solar energy. A. carry out B. get C. recover D. solve 4. Don’t forget to the lights when leaving a room or going to bed. A. turn B. turn on C. turn off D. turn out 5. My father __________ a lot last year but this year he doesn’t any more. A. used to smoke B. smokes C. gets used to smoke D. smoking 6. The end of the film was so that many people cried. A. shocking B. moving C. exciting D. boring 7. Mr. Bean’s Holiday is a film - I was laughing from beginning to end. A. hilarious B. violent C. scary D. moving 8. At this time tomorrow, I ________ an interview. A. will be having B. will have C. had D. have 9. We ____ an English test tomorrow. A. will have B. have C. has D. had 10. Solar energy will ________ to solve the problem of energy shortage. A. use B. be used C. used D. using 11. We believe that urban transport pods can travel around 30kph. A. with B. at C. in D. on 12.__________ the traffic was bad, I arrived on time. A. Despite B. In spite of C. However D. Although 13. It takes me two hours___________ that letter. A. to write B. write C. writing D. for writing 14. I’m tired of ______ nothing to do at home. A. to have B. have C. having D. had 15. Please tell him to __________ the light. It is getting dark. A. turn on B. turn up C. turn over D. turn off 16. A jet pack doesn’t a lot of space. A. have B. bring C. take D. occur 17. Which of transport do you think will be used in the future? A. mean B. meaning C. meanings D. means 18. We are looking for types of vehicles that help us to avoid . A. traffic B. traffic jam C. rush hours D. walking 19. The Segway, which is a vehicle, will be a success. A. two-wheels B. two wheels C. Two wheel D. two-wheeled 20. We will use more energy in the future. A. solar B. sunny C. sun D. sunlight 21. In my opinion, nuclear power is not only expensive but also to our environment. A. danger B. dangerous C. rick D. disaster 22. With teleportation, you disappear at a place, and then in another place seconds later. A. appears B. appeared C. reappear D. reappears

nêu những nội dung cơ bản về hiệp định pari

Cho đa thức P(x)= $(a+1)^{2}$$x^{3}$+(2a-3)$x^{2}$-5. Tìm a để P(x) có một nghiệm là x= -2.