📝Bài 3. (3đ)

Cho đoạn thẳng , điểm  nằm giữa  và  sao cho

a) Tính = ?

b) Gọi  là trung điểm của . Tính ?

b) Trên tia đối của tia CB lấy điểm N sao cho CN = 2 cm. Tính ?

1. She went to school by bus yesterday → How  2. He bought this hat at the shop over there. →  3. It took me three hours to finish my homework. → 4. I need a phone card to phone my parents. →................................................................................................................... 5. It’s about 500 km from Lai Chau to Ha Noi. →................................................................................................................... 6. I saw her last night. → 7. Her neighbor gave her a nice dress. →................................................................................................................... 8. They returned to America two weeks ago. →................................................................................................................... 9. Mrs. Robinson bought a poster. →................................................................................................................... 10. My father was in Ha Noi last month. →................................................................................................................... 11. He traveled to Nha Trang by train. →................................................................................................................... 12. She went to the doctor because she was sick. →................................................................................................................... 13. Nam left home at 7 o’clock yesterday. →................................................................................................................... 14. He taught English in the high school. →................................................................................................................... 15. The homework was very difficult yesterday. (Ho