Tìm số tự nhiên có hai chữ số, biết rằng hai lần chữ số hàng chục lớn hơn chữ số hàng đơn vị 14 đơn vị, và nếu viết hai chữ số ấy theo thứ tự ngược lại thì được một số mới (có hai chữ số) nhỏ hơn số cũ 45 đơn vị.

Viết đoạn văn về đại dịch covid 19 có sử dụng tất cả các thành phần như biệt lập, phụ chú,gọi đáp.

1. Fill in the blanks with the correct form of these verb (The PS) 1. The Earth (go) _______ around the Sun. 2. My mother (sweep) _______ the floor every morning. 3. We often (be) _______ at home on summer holiday. 4. I (not use) _______ this car regularly. 5. Hoa (drive) _______ to work every day. 6. They often (not watch) _______ TV. 7. My cousin (study) _______ English every night. 8. _______ the plane (take) _______ off at 6 pm this weekend? 9. My sister (not love) _______ Maths. 10. _______ Nam and Trang usually (go) _______ to the cinema together? 2. Make a full sentence with the given words: 1. They/ask/a/woman/about/the/way/the/railway/station. ->________________________________________________________________________ 2. My/mother/water/some plants/the/garden. -> ________________________________________________________________________ 3. Quynh/have/lunch/her/friends/a/restaurant. ->________________________________________________________________________ 4. My/daughter/draw/a/beautiful/picture. -> ________________________________________________________________________ 5. My/brother/clean/kitchen. ->________________________________________________________________________ 3. Complete the sentences with the PS or the PC: 1. He always (go) _______ class lately. 2. Sit down! A strange dog (run) _______ to you. 3. That baby (cry) _______ loudly in the party now. 4. Minh (travel) _______ to London every Sunday. 5. My brothers (not/drink) _______ tea at the moment. 6. We (have) _______ a holiday in July every year. 7. You (play) _______ football once a week. 8. The moon (circle) _______ around the earth. 9. You always (teach) _______ me new things. 10. Look! Those people (climb) _______ the mountain so fast. Mng giúp em vs ạ. Em cmon ạ

Giải hệ phương trình: $\left \{ {{a-b=2} \atop {ab-a+b=2}} \right.$ $\left \{ {{6(x+y)=10x+y} \atop {xy+25=10y+x}} \right.$

II. Điền tính từ hay trạng từ (Adj/ adv): 4. She can type very______________. QUICK/ QUICKLY III.Chọn đáp án đúng. 1, Oh , my tooth .... A - is hurting me B - hurts me C - hurts D - all are correct 2, Their new apartment is ...the other side of Ha Noi A - at B - to C - on D - in 3, Who ....the first typewriter? A - did invent B - invented C - did he invent D - invents 4, How heavy are you? A - How much weight do you have? B - How many kilos are you heavy? C - How much do you weigh? D - What is the heaviness? 5, One way to stop tooth decay is ...... less sugar. A - you eat B - to eat C - for eating D - you are eating 6,..........in town , mine is the largest A - Of all schools B - all of the schools C - In all schools D - Of all the schools 7, Sugar adds taste .....the food we eat A - for B - with C - to D - in help me plzzz

1đội sản xuất phải làm 1000 sản phẩm trong 1 thời gian quy định .Nhờ tăng năng suất lao động mỗi ngày đội làm thêm được 10 sản phẩm . Vì vậy chẳng những làm vượt mức kế hoạch 80 sản phẩm mà còn hoàn thành công việc sớm hơn 2 ngày so với quy định. Tính số sản phẩm mà đội sản xuất phải làm trong 1 ngày Giýp mik nhé các bạn

III. Choose the best answer (A, B, C or D). 1. Next summer Mike’s parents __________ him to New York to see a new film. A. taking B. is taking C. are taking D. take 2. We are visiting a milk farm to see how they __________ milk, cheese and butter. A. make B. do C. play D. ride 3. My younger sister __________ a short black hair. A. have B. has C. is D. are 4. On Sunday, Cuong __________ his parents in the field as usual. A. help B. helps C. is helping D. helping 5. Can you __________ me the book, please? A. move B. pass C. have D. turn 6. Nga is __________ the phone, chatting __________ friends. A. on – to B. on – on C. to – with D. to – to 7. My best friend is kind and __________. He often makes me laugh. A. funny B. nice C. shy D. boring 8. The film is very __________ and we can’t see all of it. A. wonderful B. easy C. exciting D. boring 9. The summer camp is for students __________ between 10 and 15. A. age B. aged C. aging D. ages 10. Mary has __________ hair and big __________ eyes. A. blonde, small B. a black, blue C. blonde, blue D. black, long 11. Next summer I am working as a __________ teacher in a village near Hoa Binh city. A. volunteer B. nice C. good D. favourite 12. She is always __________ at school and helps other students with their homework. A. hard B. hardly C. hard-working D. work hard 13. Our class is going to __________ a at the zoo on Saturday. Would you like to come with us? A. have B. take C. pass D. go 14. It’s __________ to go home. It’s so late. A. now B. sure C. time D. like 15. Please turn __________ the lights. The room is so dark. A. in B. on C. off D. at 16. Daisy is very __________ to take the test. She is a very good student. A. kind B. confident C. friendly D. talkative 17. I like to read “Tuoi Tre” very much. It’s my __________ magazine. A. nice B. quick C. funny D. favourite 18. Nguyen is in the art club. She likes to pain pictures, and everyone enjoys them. She is very __________. A. funny B. shy C. creative D. kind 19. Please be __________ when you have to use fire to cook. A. happy B. careful C. quiet D. funny 20. The baby next to me is very __________. He talks all the time, which really annoys me. A. silent B. lovely C. talkative D. kind

Cho các chất sau: CH3COOH; HCOOC2H3; CH3COOC2H3; HCOOC6H5; HCOOC(CH3)=CH2; HCOOCH=CHCH3. Số chất mà khi thủy phân cho 2 sản phẩm đều tráng bạc là viết pt giúp mình vs

Câu thứ hai trong phần dịch nghĩa bài thơ “Ngắm trăng” của Hồ Chí Minh (Trước cảnh đẹp đêm nay biết làm thế nào?) và câu hai trong phân dịch thơ (Cảnh đẹp đêm nay, khó hững hờ) thuộc những kiểu câu nào và thực hiện những hành động nói gì? So sánh sự khác nhau trong việc sử dụng hai kiểu câu đó.

Triệu hồi các thánh toán giải chi tiết vẽ hình hộ em ạ emm nguu toán nhất luôn😤