[Toán 11] Có 2 hộp đựng các viên bi khác nhau. Hộp I đựng 6 bi xanh và 4 bi trắng, hộp II đựng 5 bi xanh và 3 bi trắng. Lấy từ mỗi hộp 1 viên bi. Tính xác xuất để lấy được đúng 1 bi xanh

Vẽ sơ đồ bộ máy nhà nước thời Lê sơ và Lí-Trần? Chỉ ra điểm giống và khác nhau? Nhận xét chung về bộ máy nhà nước thời Lê sơ.

Cho 3 số dương a, b, c thỏa mãn a + b +c = 1 Chứng minh rằng: 1/(ab + 2c ²+2c) + 1/(bc+2a ²+2a) + 1/(ac+2b ²+2b) >= 1/(ab+bc+ac)

Một thanh hợp kim nhôm có độ đài là 20cm ở 30 độ C và có độ dài là 20,028cm ở 100 độ C. Hỏi độ dài của thanh ở ) độ C là bao nhiêu? Nhiệt độ của thanh là bao nhiêu? khi chiều dài của thanh là 20,008cm

Mọi người giúp mik bài 5 đề 10 và bài 4 đề 11 với!!!!!!!!! Mik đang cần gấp

Cho A=[–4;7] và B=(–∞ ;–2). Khi đó A Thuộc B là:

II. Choose the best answer (A, B, C or D) to complete the sentences. (2 points) 1. He often goes to school..................her father's car. A. by B. on C. in D. at 2. Can I help you? – I'd like ten...................of soda, please. A. packets B. boxes C. bars D. cans 3. Hoa is the.....................of the two girls. A. prettier B. prettiest C. pretty D. more pretty 4. Many Asian animals are........................ A. at danger B. on danger C. in danger D. in dangerous 5. I don't want much sugar in my coffee. Just......................, please. A. little B. few C. a few D. a little 6. She is doing.....................in the garden, just walking about. A. anything B. everything C. nothing D. something 7. Would you like .....................that for you? A. me doing B. me to do C. I to do D. me do 8. Most of us like.......................to the sea in the summer. A. go B. to be going C. going D. to going 9. Is there anything good ............ Sao Mai movie theater tonight? A. at on B. on at C. on in D. in on 10. My sister and I........................TV in the living room now. A. am watching B. is watching C. are watching D. watching III. Supply the correct forms of the verbs in brackets. (2 points) 1. The train to Ha Noi (leave) .................... at 10.00 tomorrow. 2. We (waste) .................... too much power at the moment. 3. They often (wear) .................... red T-shirts to see the macth of ther favorite football team, Vietnam, but today they (wear) .................... blue T-shirts because the red shirts (wash) .................... . 4. Let's (help) .................... your mother, Lan. She (clean) ................... the floor. 5. What about (go) .................... to the museum? There (be) .................... an exhibition at 4.00 this afternoon. 6. Mai as well as her family (visit) .................... Cua Lo Beach this summer. IV. Each sentence has one mistake. Find and correct it. (1 point) 1. Mai is studying at an university in Ha Noi. ...................→ ................... 2. The deaf is the people who can neither nor hear. ...................→ ................... 3. Hung brushes his teeth, takes a shower and gets dressing. ...................→ ................... 4. Deforestation are such an alarming problem in the world. ...................→ ................... 5. Neither Mai nor her mother are beautiful. ...................→ ................... V. Supply the correct forms of the words. (1 point) 1. What is the .................... of that river? LONG 2. It is necessary to find a .................... to this problem. SOLVE 3. He left the room .................... goodbye. WITH 4. We can protect the environment in many ways such as planting NATURE more trees, saving .................... resources,................. . 5. Reading books can help us .................... our knowledge. WIDE 6. Who is the .................... of that house? OWN 7. .................... is now a problem facing all the governments in the world. POLLUTE 8. He is so .................... that he doesn't know what is happening now. FOOL 9. How much do you ....................? WEIGHT 10. Linda couldn't go to school yesterday because of her .............. . ILL Part 2: Reading (7.5 points) I. Complete the passage with a suitable word for each blank. (2 points) Tony and (1).......... friends have a trip to Vietnam next summer. At (2)........., they are going to Ha Noi (3).......... plane and they are going to stay there (4)........... Then they are going to travel to Ha Long and Hue. They (5).......... going to visit a (6).......... of interesting places and some primary (7)........... They are going to help (8).......... in the schools practice speaking English. (9).........., they are going to fly back to England (10).......... Ha Noi.

các bạn giúp mình phần b với nhé

1.It’s the oldest building in the town - No other 2.It was the happiest day of my life - No other 3.It’s the best film - No other 4.She is the most popular singer in out country - No other Singer 5.It was the coldest day of the year - No other Day 6.My kitchen is smaller than yours - Your kitchen 7.The bus takes longer than the train - The train travels 8. No one in the group is younger than her - She is 9. Nobody is older than my grandmother in my family - my grandmother is 10. Cháu is the best at English in her class - nobody in Chau ‘s class 11. I’m the tallest in the class - Nobody is 12. The Mekong river is longer than the red river - the red viver is 13. Bana is cool, da Lát is cooler and sapa is the cooles - sapa is .............. of the three places 14. No one in my class is as beautiful as Hoa. - Hoa 15. My room is smaller than your room - your room is 16. No one in our class is as tall as Nam - Nam is the Giúp mik mới.mik cần gấp

11.mybrothers often play football... sunday afternoon A .at B. for C . on D.in 12.john is proud .....his father and loves him so much A.about B. for C.in D . of 13.helen:"where do you come from ?" A.i come from london B.in london C. yes, i've just come here D. i'm living in london 14. you like watching sports.....? A. do you B.don't you C. are you D. aren't you 15. could you ..... the radio,please ? it's very noisy A. turn off B. go on C. look after D look for 16. she suggested.... to the mountains for the eeekend A. go B.to go C.going D. went 17.Ellen .......? A.how is john B. What does john like C. what does john look like D. who does john look like