Câu 1 Viết các công thức bazo tương ứng với các oxit sau đây: BaO , K2O , FeO , CaO , Cr203 Câu 2 Cho các oxit sau Na2O ,CO2, , CaO ,Fe2O3 , SO2 ,P2O3 ,Al2O3 , N20 , NO2 , K20 Phân loại các oxit trên rồi đọc tên Làm giúp mình nha mình sẽ cho các bạn cảm ơn , câu trả lời hay nhất+ 5 sao cho câu trả lời đúng và nhanh nhất Cảm ơn m.n

Hệ cơ quan nào sau đây ở người có chức năng đảm bảo sự thích ứng của cơ thể trước những thay đổi của môi trường? A: Hệ thần kinh. B: Hệ tuần hoàn. C: Hệ hô hấp. D: Hệ bài tiết.

Chất X có CTPT C4H8O2. Đun 4,4g X trong dung dịch NaOH (dư) thoát ra hơi ancol Y. Cho Y qua CuO (to) thu được andehit Z. Cho Z thực hiện phản ứng tráng bạc thấy giải phóng nhiều hơn 15g Ag. Xác định CTCT của X

Cơ quan nào của đường dẫn khí có tuyến amiđan và tuyến V. A chứa nhiều tế bào limphô? A: Khí quản. B: Họng. C: Thanh quản. D: Phế quản.

Câu 4: Trình bày nguồn gốc, ý nghĩa, công dụng của văn chương?

Cho Tam giác ABC vuông tại A, đường cao AH(H thuộc BC) và phân giác BE của ABC (E thuộc AC) cắt nhau tại I. Chứng minh: a)IH×AB=IA×BH b)Tam giác BHA đồng dạng Tam giác BAC => AB^2=BH×BC c)IH/IA=AE/EC d) Tam giác AIE cân Giải hộ mình càng nhanh càng tốt mình vote 5⭐

Giúp em phần này với ạ,em cảm ơn

cho 5,6 lít hỗn hợp gồm etylen và axetylen tác dụng hế với dd brom dư, lượng brom đã tham gia phản ứng là 56 gam a. Tính % thể tích mỗi khí trong hỗn hợp ban đầu (các khi đo ở đktc) b. Tính khối lượng sản phẩm thu được c. Đốt cháy hoàn toàn hỗn hợp khí trên cần bao nhiêu lít kk (biết VO2 chiếm 20% V kk

Cho ∆ABC vuông tại A có góc B bằng 60° và AB=5cm. Tia phân giác của góc B cắt AC tại D. Kẻ DE vuông góc với BC tại E a) Chứng minh : ∆ABD = ∆EBD b) Chứng minh : ∆ABE là tam giác đều c) Tính độ dài cạnh BC

11. At first I thought Jake was an interesting/ interested guy, but tonight I felt somewhat boring/ bored with his company. 12. I think all my teachers are (amazed/ amazing). I love them very much. 13. It was very (disappointing/ disappointed) not to get the job. 14. Philip was (annoying/ annoyed) at Joanne's behaviour. 15. I thought the program on wildlife was (fascinating/ fascinated). I was (fascinating/ fascinated). 16. We were (thrilling/ thrilled) to hear your good news. 17. The journey took all day and night. They felt (tiring/ tired). 18. Did Tim feel frightening/ frightened when he saw the snake? 19. Last week, my father threw a (surprised/ surprising) party to celebrate my birthday. 20. I didn’t find the jokes at all (amused/ amusing). II. Complete the sentences with present participle or past participle form of the verb in brackets. 1. The film wasn't as good as we had expected. (disappoint) a. The film was _________________________ . b. We were ________________________ with the film. 2. Diana teaches young children. It's a very hard job but she enjoys it. (exhaust) a. She enjoys her job but it is often ______________________ . b. At the end of a day's work, she is often _______________________ . 3. It's been raining all day. I hate this weather. (depress) a. This weather is _____________________ . b. This weather makes me ______________________ . c. It's silly to get ____________________ because of the weather. 4. Clare is going to the United States next month. She has never been there before. (excite) a. It will be an ________________ experience for her. b. Going to new places is always ________________ . c. She is really __________________ about going to the United States. 5. move a. The film was so ________________. b. I was deeply ________________ by the film. 6. tire a. Going shopping all day makes me feel __________________. b. Going shopping all day is ______________________. 7. terrify a. Both of us were __________________ of that violent scene. b. That violent scene was _______________________. 8. interest a. Jim’s ___________________ in reading books. b. Jim finds reading books ____________________. 9. fascinate a. Jane sometimes has many _____________ ideas. (thu vi, hai long) b. We are _____________________ by Jane’s ideas. 10. depress​ a. The weather was ___________________ yesterday. b. The weather made me feel _______________________ yesterday. II. Hoàn thành câu thứ hai sao cho nghĩa không thay đổi so với câu thứ nhất, sử dụng từ gợi ý trong ngoặc. 1.​There was a traffic jam. I arrived at the train station on time. (although) ____________________________________________________________________ 2.​I don’t want to buy a new computer. I have enough money. (although) ____________________________________________________________________ 3.​Both of them usually go to school late. They don’t live far away from school. (in spite of) ____________________________________________________________________ 4.​My brother still went to school yesterday. He had a sickness. (despite) ____________________________________________________________________ 5.​He looks healthy. He has a weak heart. (although) ____________________________________________________________________ 6.​Louis is not so rich. He often does charity. (although) ____________________________________________________________________ 7.​The weather was awful. We enjoyed our party last night. (despite) ____________________________________________________________________ 8.​She goes shopping every week. She has many clothes. (in spite of) ____________________________________________________________________ BT: Sử dụng liên từ “however” hoặc “nevertheless” để liên kết hai câu cho sẵn. 1. Mrs. Smith loves her children so much. She’s sometimes very strict. __________________________________________________________________ 2. We can go there by bus. It is not the only way. ___________________________________________________________________ 3. Jim is good at English. He is not the best student. ___________________________________________________________________ 4. My new phone costs a lot of money to buy. It isn’t as good as I expected. ___________________________________________________________________ 5. It’s hard to find a parking lot near here on Sunday. I think we can find one. ___________________________________________________________________ 6. My mother wants to go to Paris in this summer. My dad wants to go to Berlin. ___________________________________________________________________ 7. Jane doesn’t like salads. She likes vegetables. ___________________________________________________________________ 8. My father loves watching football match. He never plays football. ___________________________________________________________________