Đáp án đúng: A. 6V

Đáp án đúng: C. Tia sáng bị khúc xạ (gãy khúc) tại mặt phân cách giữa không khí và nước.

Đáp án đúng: A. Bóng đèn dây tóc

Đáp án đúng: A. Bóng đèn dây tóc

Ai cần ng hỏi ak bn

Thế có ai bj như thế chưa ạ

12345:2=6172.5

12345:2=6172.5

My best friend is Linh. She is thirteen years old and studies in the same class as me. Linh is a cheerful and kind girl. She has long black hair, bright eyes, and a lovely smile that can make anyone feel happy.Linh is not only beautiful but also very smart. She always gets good marks at school, especially in English and Math. Whenever I have difficulties with my homework, she patiently explains everything to me until I understand.We often spend time together after school. Sometimes we ride bicycles around the park, sometimes we sit under the trees and talk about our dreams. Linh wants to become a teacher in the future, and I believe she will be a great one.To me, Linh is more than just a friend — she is like a sister. I feel very lucky to have such a wonderful friend in my life.

Các công việc chính: làm đất, gieo trồng, tưới nước, làm cỏ, bón phân, phòng trừ sâu bệnh, thu hoạch.

Ở gia đình em: tưới cây, nhổ cỏ, bón phân, bắt sâu, thu hoạch rau.