Cho 4.48lit khí hidro ở đktc đi chậm qua bột CuO nung nóng a. Tính khối lượng bột CuO tham gia phản ứng b. Tính khối lượng đồng tạo thành

Viết chương trình : -Nhập vào số nguyên N . - Tính tổng các số chia hết cho 3 từ 1 đến N và xuất ra màn hình . - Thực hiện biến đếm xem có bao nhieu số chia hết cho 3 từ 1 đến N và xuất kết quả ra màn hình

Giúp mình làm mấy câu này nha mấy bn

Giúp mình câu này nha mọi người

(x – 1)(2x + 7)(x² + 2) = 0 Bạn nào giải giùm mình bài này ạ.Cảm ơn ạ.

Bài 1. Cho m < n, hãy so sánh: a) m + 2 và n + 2; b) m – 5 và n – 5; c) 5m và 5n; d) –3m và –3n.

Thiết lập chuỗi thức ăn, lưới thức ăn cho các sinh vật sau: 1.Bò, gà, hổ ,cỏ ( lá cây) ,chim , châu chấu ,cáo , vi sinh vật . 2. Tảo , động vật phù du, giáp xác chân chèo , tôm , cá

2; change these sentencaes into passive voice 1.jim will pick me to the airport tomorrow ...................................................... 2.peter wrote his report last week ...................................................... 3.they will replace the old equment with new one .......................................................... 4.what will they do to prevent natural disasters? ......................................................... 5.i think we will soon use up the natural resourses ................................................................. 6.the children water the treed every two days ............................................................. 7.they never mentioned jim in their conversation ................................................ 8.at this time next month i will be sitting an English text .......................................... 9.at midnight, my brother and i was making a wish list .................................. 10.my mother is preparing dinner at the moment ............................................

Bài 3: Chuyển những câu chủ động sau đây thành câu bị động. 9. When will they sell their new products? _____________________________________________________________________ 12. No one will buy products with poor quality. _____________________________________________________________________ 13. They will not allow your dog to enter the museum. _____________________________________________________________________ 14. Have anyone heard of Jim and Jane’s luxury wedding? _____________________________________________________________________ 15. The boys are using the computer to look up information. _____________________________________________________________________ Bài 4: Chuyển những câu bị động dưới đây thành câu chủ động. 1. A gift was sent to me by my old students. _____________________________________________________________________ 2. You are not allow by the teacher to cheat in the exam. _____________________________________________________________________ 3. My table is being fixed by my father. _____________________________________________________________________ 4. How long has this fax machine been used by Mr. Green? _____________________________________________________________________ 5. The singer was not recognized by his fan when he was at the restaurant. _____________________________________________________________________ 6. He will be disqualified from the competition by the judges if he uses drugs. _____________________________________________________________________ 7. All the unnecessary lights will be turned off to save energy. _____________________________________________________________________ 8. Jane was prevented from staying up too late by her mother. _____________________________________________________________________ 9. Was this document typed by Mr. Brown? _____________________________________________________________________ 10. Many dead people were found by the recuers after the earthquake. _____________________________________________________________________ MỌI NGƯỜI GIÚP E VỚI Ạ . E SẼ ĐÁNH GIÁ 5 SAO VÀ CẢM ƠN MỌI NGƯỜI NGAY Ạ

Bài 1: Khoanh tròn vào đáp án đúng. 1. Yesterday my brother (bought/was bought me) a new T-shirt. 2. Who (was broken/broke) the vase? 3. Yesterday I was having dinner when my door (was knocked/was knocking). 4. At the moment my car (is polishing/is being polished) by my brother. 5. This car (has been used/has used) by Mr. Smith for 5 years. 6. The early train to Manchester city (leaves/is left) at 6 am tomorrow. 7. No one (has heard/has been heard) about the accident last night. 8. If you work hard, you (will reward/will be rewarded). 9. (Have the police caught/Have the poloce been caught) the thieves yet? 10. Which dress (chose/was chosen) to wear by Jane last night? 11. At this time next month, I (will be visiting/will be visited) London with my family. 12. The children (are looking/are being looked) after by a babysister. 13. You (will be receive/ will receive) a lot of compliments if you win the contest. 14. Jim didn’t realize that his wallet (stole/was stolen) until he came home. 15. (Was you brought/Was you bringing) by your grandparents when you were small? Bài 2: Hoàn thành các câu sau với thể bị động của động từ trong ngoặc ở thì thích hợp. 1. I (usually take) ______________to the cinema by my parents every month. 2. _____________(Jim/inform) of the exact date of the conference? No, he wasn’t. 3. The concert (broadcast)_____________live tomorrow. 4. Yesterday, temparature (forecast) _____________to reach 400C. 5. At this time tomorrow, a birthday cake (make)________ for our best friend Jessy. 6. Who___________(rob) of all the properties last week? 7. All the members ___________(treat) equally in our organization. 8. Nothing (do)_________so far to prepare for the coming storm. 9. When I was small, I often (call) __________by my nickname. 10. Yesterday, Jim was playing with his dog when the doorbell (ring)_____________. 11. What______________(do) so far to lessen the impact of natural disasters? 12. At 8 o’clock yesterday, my brother (feed) __________by my mother while I (look) ____________after by my father. 13. This film (never show) _______________on television before. 14. If you submit your assignment late, you (punish)___________by your teacher. 15. I think more attempts (make) ____________in the future to protect people from natura catastrophes. 16. No feasible solutions to this problem (put)______________forward yet. 17. I don’t think that black café (prefer)_____________by many people. 18. Last week, everyone in my class (snow) _____________under. 19. _______________(these sheep raise) by the local people? 20. Every student (anticipate)______________to finish their essay before the deadline. MỌI NGƯỜI GIÚP E VỚI Ạ , E CẢM ƠN. E SẼ CẢM ƠN VÀ ĐÁNH GIÁ NĂM SOA CHO MỌI NGƯỜI NGAY Ạ