1. A,  of great value, câu đầu đoạn cuối : Fortunately, many of these values have been well preserved

2. B,  to support his family,   dòng thứ 3, đoạn 2: Boys learns to work hard to support their families

3. B,  admit their mistakes,  dòng 5, đoạn 2 : When they made a mistake, they would not let another person be punished for it

4. C,  children,   3 câu đầu đoạn 2: Even hundreds of years ago, children were taught to behave responsibly. They learnt to respect seniority. When they passed an object to .....

5. B,   unacceptable

6. D,   good manners  and their value, 

 -> cả đoạn 1 đều nói về manners :  Good manners are a treasure......... they live in . Manners are taught...... to generation.

->đoạn cuối nói về value : Fortunately, many of theses values have been well preserved.