Cho 8,96l hh A gồm anken x và h2(dktc) có tỉ số dA/h2=8,5, cho xúc tác và đun nóng, sau khi pư hoàn toàn thu đc hh khí gồm ankan y và h2 có dy/h2=13,6 Tìm CTPT của x và y (Giúp với ạ ngày mai kiểm tra ạ:(((( )

Tục ngữ có câu : Đi một ngày đàng học một sàng khôn . Nhưng có bạn nói : Nếu không có ý thức học tập thì chắc gì đã có "sàng khôn'' nào ! Hãy nêu ý kiến riêng của em và chứng minh ý kiến đó là đúng. GIÚP MÌNH VỚI NHÉ ! Mình sẽ cho câu trả lời hay nhất và 5 sao nhé! Giúp mình đi nhé! MÌNH CẦN GẤP. LƯU Ý :KHÔNG ĐƯỢC CHÉP MẠNG ĐÂU NHÉ!

Giúp em bài 1 với ạ pls, em cảm ơn ạ! 谢谢!!!

1. Why don't you ____________ a go? It's not difficult! A. make B. do C. have D. set 2. Just ____________ your best! - That's all anyone can ask of you. A. do B. be C. make D. have 3. Grandma ____________ a lot of pleasure from gardening. A. obtains B. captures C. derives D. attracts 4. Our coach is popular ____________ the whole team. A. for B. with C. by D. to 5. I think you are ____________ the weather. You should take some rest. A. on B. under C. beneath D. out of 6. My father never indulges ____________ drinking. A. on B. in C. with D. to 7. He was able to cope ____________ the stresses and strains of the job. A. with B. to C. in D. on 8. Thomas Eakins studied not only painting ____________ anatomy when he was training to become an artist. A. moreover B. but also C. as well D. and 9. Neither the teacher nor his students ____________ pleased with the performance of the team. A. was B. were C. has been D. being 10. There is an enormous range of holiday courses on ____________ in the summer. A. demand B. suggestion C. advice D. offer 11. There has been an increase in the ____________ of folk music over recent years. A. popular B. popularity C. popularly D. popularize 12. The students failed to ____________ the necessary requirements for admission to the course. A. miss B. meet C. suit D. obtain 13. I'm glad to hear that you share my ____________ in Spanish music. A. enjoyment B. listening C. interest D. liking 14. Covid-19 has put a lot of people's job ____________ risk. A. in B. on C. at D. under 15. Many governments in the world have ____________ actions to slow down the spread of Covid19. A. taken B. done C. created D. helped 16. Were you aware ____________ the risks of the coronavirus? A. in B. about C. for D. of 17. If he carries on being late for work like this, he's in ____________ of losing his job. A. danger B. dangerous C. endanger D. endangered Giải thích hộ mk (nếu có thể), Cảm ơn.

Passive He should read many books ->

44. Spending too much time playing games makes you tiring and dizzy. A B C D 45. Million of foreign visitors come to Viet Nam every year. A B C D 46. After each lesson we often have a ten_minutes rest. A B C D 47. What a beautiful weather ! I’ll go to the beach with my friends. A B C D 48. Viet not got up early and do morning exercises yesterday. A B C D 49. You look tired. You’d better staying inside at recess. A B C D 50. Although it rained heavily , but we went to school on time. A B C D

Điền dấu thích hợp (>;<;=) vào chỗ chấm: 712 ....512 25 .....615 710 ....79

Passive They couldn't buy that book yesterday ->

I would prefer ...(read) a book than ...(watch) a movie right now.

Cho pt: x ² + (2m -1)x -m = 0 Tìm GTNN của A= x1 ² + x2 ² - 6x1x2