a)vì sao không khí và nước chanh là hỗn hợp? có thể đổi độ chua của nước chanh bằng cách nào? b)người ta trộn rất cẩn thận bột sắt và bột lưu huỳnh rất min , thu được một lọa bột đen.Có thể xem bột đó là hỗn hợp gì

vì sao phải 1 lòng theo đảng tin tưởng vào sự lãnh đạo của đảng /gấppppppppppppppp/

Giúp mik vs mọi người Cần gấp ạ Ai làm xong nhanh nhất mik cho ctlhn,5 sao và cảm ơn

Giải hộ em đi mn Em sẽ cho tlhn + vote

Calli chữ Vui Gấp Trên medibang paint pro

Cho tam giác ABC có trung tuyến AM. Gọi I là trung điểm của AM, BI cắt AC tại D. Chứng minh AD = 1/2 DC

Nêu cách tìm chu vi hình thoi Nêu cách tìm diện tích hình chữ nhật Nêu cách tìm diện tích hình vuông

Tim `x,y,z ` `a)` ` x/2 = y/3=z/4 , x+y+z =81`

A. Give the correct form of verbs. 1. Peter ______________very hard. He never gets high scores. (not/ study) 2. My mother often ______________me English on Saturday evenings. (teach) 3. I like Maths but she ______________Literature. (like) 4. My sister ______________dishes every day. (wash) 5. They ______________breakfast every morning (not/ have) 6. The moon ______________ around the earth. (circle) 7. He______________ German so well because he ______________ from Germany (speak)/(come) 8. Mary ______________very well, but she ______________very fast. (swim)/ (not run) 9. How many lessons ______________a day? (she often /have) 10. ______________ Jim and Joe ______________ the flowers every week? (water) B. Put do, don’t, does, doesn’t, am, is, are, have into the gaps. 1. Where ______________you go shopping? 2. I ______________having lunch with my friends now. 3. Now Mai ______________watching a video clip about science. 4. Mr. Minh ______________our favorite teacher. He teaches Science. 5. What ______________you usually do at break time 6. Nam and Duy ______________not doing their homework. 7. We often ______________Maths lessons on Monday. 8. How ______________you go to school every day? 9. ______________you hungry? 10. ______________your brother like pop music? Writing A. Rearrange the sentences to make meaningful sentences 1. fly/ with my parents/ to Florida/ sometimes/ I/ in spring. → 2. late/ comes/ she/ often/ to school/ in winter. → 3. meet/ at the sports ground/ they/ after dinner/ always/ their friends. → 4. enjoys/ swimming/ in our pool/ always/ in the morning/ she. → 5. My grandmother / at home / always / is / in the evening /. → 6. celebrate / my birthday / I / usually / with my friends /. →

giải thik nx nha 1. The developing countries that are producers of primary products are those that have minerals and foodstuffs _______ by the _______ countries. A. needing / industrialized B. needed / to industrialize C. needed / industrialized D. be needed / industrializing 2. He hates _______ when he is having his after-lunch nap. A. to disturb B. being disturbed C. to have disturbed D. having been disturbed 3. Per capita GNP is just a rough way of _______ the ability of different countries_______ goods and services, _______ into account the fact that they have different populations. A. compared / producing / taking B. comparing / producing / taken C. comparing / to produce / taking D. comparing / producing / to take 4. My friend specially asked that nothing should be said about what she told me. ~ My friend specially asked me _______ anything about what she told me. A. not saying B. not to be said C. not having been said D. not to say