Giải thích các hiện tượng sau và viết PTPU: a) Sục từ từ khí CO2 vào dd Ca(OH)2 đến dư b) Nhỏ từ từ dd Na2CO3 vào dd HCl và ngược lại c) Cho từ từ AlCl2 vào NaOH đến dư

Chọn đáp án đúng Giải thích nữa nhá!

cho phân số : P=3n+5/6n(với n thuộc N*) với giá trị nào của n thì P có giá trị lớn nhất.tìm giá trị lớn nhất đó

vẽ chibi hoặc là anime nhé 1 trong 2 hay 2 trong 2 đều được

VII. Rewrite each sentence so it has the same meaning. Use a comparative form of the adjective in brackets. (Viết lại câu đồng nghĩa, sử dụng cấu trúc so sánh hơn của tính từ trong ngoặc) 1. Tim is older than Sarah. (young) Sarah 2. Our house is larger than yours. (small) Your house is 3. Your bike is slower than mine. (fast) My bike ……………………………………………………………………

VI. Read the text carefully, and then answer the questions. Many people enjoy living in a big city because they think life is more exciting there. However, I come from a small village and in my view, there are lots of benefits. The main reason I prefer village life is because it’s very quiet, so I always feel calm when I’m here. Another reason is that the air is so fresh and clean. We have more green spaces and bigger gardens, too. In addition, I think the people here are friendlier. Personally, I’m interested in wildlife photography, so the countryside is perfect for me. The only downside is transport. I have an early start for a long Journey to school in Faro and the school bus is always stopping to pick up more people. Also, it’s boring sometimes, but I enjoy chatting to my friends. Fortunately, I’m learning to ride a moped. On balance, I disagree that city life is better, as I think my village lifestyle is healthier and more relaxing. In spite of that, some of my friends couldn’t cope with life in the country, so it comes down to personal opinion. 1. Where does the writer come from? 2. Does he like living in a big city? 3. Why does he prefer village life? 4. How does he think about the people in his village? 5. According to the writer, what is the disadvantage of living in the village? 6. How does he go to school? 7. Does he think city life is better than village life? 8. What is he interested in?

giúp mik đi mà !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

V. Read the text and decide whether the following statements are True (T) or False (F). Tokyo is a famous city. There are a few good buildings and impressive temples; there are a few parks worth visiting. Everything has to be small in Tokyo: houses, rooms, shops. Long-side streets consist of tiny houses only, and this often creates a toy-like, with small women tip-toeing along in their kimonos. Tokyo at night is a very different place from Tokyo in daytime. Millions of neon lights are switched on and nowhere in the world is more attractive. A town is not its buildings alone; it is an atmosphere, its pleasure, its sadness, its madness, and above all its people. Tokyo may lack architectural beauty but it has character and excitement; it is alive. I found it a mysterious and lovable city. 1. There are many beautiful buildings in Tokyo. 2. There is nothing to see in the parks in Tokyo. 3. Many small houses found along long road. 4. At night, Tokyo is not as attractive as many other cities. 5. Tokyo has beautiful architecture. 6. The author likes Tokyo.

Bài 20: Từ 1 đến 2001 có bao nhiêu số lẻ, bảo nhiêu số chẵn ? Tổng các số lẻ và tổng các số chẵn hơn kém nhau bao nhiêu đơn vị? Bài 23: Cho dãy số 1;2;3;4;5;6.........; 1991,1992 a) Hỏi dãy số có bao nhiêu chữ số ? b) Tìm chữ số thứ 3000 của dãy số. Bài 24 : Cho dãy số 2;4;6;8;10;............. ; 1992. a ) Hỏi dãy số có bao nhiêu chữ số ? b ) Tìm chữ số thứ 2000 của dãy số : Bài 25 : Cho dãy số tự nhiên 1;2;3;4;.....;x Tìm x để số chữ số của dãy gấp ba lần x Bài 26: Cho dãy số lẻ liên tiếp 1;3;5;7;9;........;x Tìm x để số chữ số của dãy gấp 4 lần số các số của dãy . Bạn nào biết mấy bài này thì giải hết hộ mình với mình vot cho hứa

Tính x biết (xong trc 8h30 nhé)