Hãy nêu một ví dụ sử dụng ròng rọc trong thực tế và cho biết đó là loại ròng rọc gì?

Các câu hỏi liên quan

I. Put the verb in correct tense: (2marks) 1. He (travel) to work by car. ............................................................................................................. 2. The children (play ) soccer at the moment. ............................................................................................................... 3. She (not do ) her housework every afternoon. ............................................................................................................... 4. He (buy ) a new hat tomorrow? ................................................................................................................ II.Read and answer the questions: (2 marks) Hello, my name 's Lan. I'm a student in grade 7 . I go to school 6 days a week. I often walk to school. My classes start at 6:45 and finish at 11: 15. At school I learn about many things. My favorite subject is English. But I don't like Math because it's difficult. At recess, I usually chat with my friends, sometimes I play skipping rope or eat some snacks. I like to go fishing with my father after school. 1. What grade is Lan in? .................................................................................... 2. How does she often go to school? ..................................................................................... 3. Does Lan never eat at recess? ...................................................................................... 4. What does Lan do after school? ......................................................................................