Từ điểm A ở ngoài đường tròn (O; R) là hai tiếp tuyến AB, AC (B, C là hai tiếp điểm). Gọi H là giao điểm của OA và BC. a, CM: \(OA ⊥ BC\) và tính tích \(OH.OA\) theo \(R\) b, Kẻ đường kính BD của đường tròn (O). CM: CD//OA c, Gọi E là hình chiếu của C trên BD, K là giao điểm của AD và CE. CM: K là trung điểm của CE

2 thỏi nhôm có thể tích bằng nhau một thỏi được nhúng chìm trong nước một thỏi được nhúng chìm trong dầu Hỏi thỏi nào chịu lực đẩy ác xi met lớn hơn

a + b = 12 b + c =15 c + a = 18 Tính a ,b , c

Câu 1: Nêu cấu tạo và chức năng của các hệ cơ quan Câu 2: Trình bày cấu tạo và chức năng của xương dài

2. Listen to a girl talking about her hobby. Decide whether the sentences are true (T) or false (F). Circle T or F. You will listen TWICE. 1. Julia is talking about her hobby. T F 2. She bought a camera on her eleventh birthday. T F 3. She has time for her hobby every day. T F 4. She goes to the park at the weekend to take photos of the flowers. T F 5. Julia doesn't let anyone see the photos she has taken. T F II. READING 1. Read the passage and decide whether the sentences are true (T) or false (F). Circle T or F. Nowadays, teenagers seem to be too busy with their study to afford a hobby. However, if you have a little spare time, it is advisable to have a hobby because of the emotional, mental and physical benefits it brings. Focusing on an activity that you like will help you relieve stress and pressure from your schoolwork. Additionally, spending time with people of similar interests will enable you to make friends more easily. This helps improve your communication skills and promote teamwork. Taking up a hobby can be a real challenge, but it is not the type of stressful challenge coming from school. Instead, challenging yourself to do a skill that you like will bring satisfaction and pride. 1. Each teenager should have a hobby if they have time. T F 2. Focusing on a hobby will make you feel really stressed. T F 3. Having a shared interest helps you to communicate better. T F 4. The challenge from having a hobby is the same as that from school. T F 5. You can feel proud when trying to do a skill that you are interested in. T F 2. Read the recipe and use the words from the box to fill in the gaps. There are TWO words you will NOT need. Write your answers in the gaps. mix bag stir pour cook warm teaspoon

tìm hai số tự nhiên khác nhau biết rằng nếu bỏ đi 2 chữ số 0 ở tận cùng bên phải của mỗi số rồi nhân hai số mới này với nhau thì được kết quả là 16

Làm cho mình dàn ý về bài Treo biển nhé Ko coppy mạng , làm theo đúng trong sách nhé , cần có MĐ,TĐ,KĐ Cảm ơn các bạn rất nhiều

Giúp mik vs mai mik kiểm tra r ạk Giúp mik đánh giá cho 5 sao ạk ❤️

Hunry or you will be late...... school A. with B. for C. at

Tóm tắt bài văn này giúp mik vs hứa vote 5* và c.ơn! Living in the country has many benefits: however, it has both the advantages and the disvantages Now we will talk about the advantages. Firstly, you have a healthy life. There are no dust, no smoke and no traffic jam. The air is fresh. The food is clean becuse people collect them from the garden. Secondly, living the countryside is peaceful. It is very quiet to relax after working or there are many beautiful wide fields and natural scenery. Finally, there are no separations in the countryside. Neighbors are really best friends. They will help you pleasantly if you have trouble. Each problem has its solution and your neighbors will share it for you. According to disadvantages, it has poor quality, facilities and employment .One of the drawbacks of living in the country is poor quality of education in schools there. Country schools usually do not have good facilities like for example gyms or computer rooms. Another bad side of country life is lack of entertainment. There are no things to do at night:no cinemas, no bar and no amusement park. Last but not least, the problem with finding a job is important. There are no companies or factories so the rural people don`t have a good job.