听第二篇短文，回答第16至20小题。
(
B
)16. When do Western children usually start to do housework?
A. When they're 6. B. When they're 10. C. When they're 12.
(
A
)17. Why do children do housework only at weekends?
A. They are busy from Monday to Friday.
B. They want to play from Monday to Friday.
C. Their parents are busy at weekends.
(
C
)18. Which of the following do younger kids often do?
A. Cook dinner for the family.
B. Cut grass.
C. Feed the family cat or dog.
(
C
)19. Why do older kids do more housework?
A. To help their parents more.
B. They have less homework.
C. To buy more expensive things.
(
A
)20. What does doing housework help children with?
A. Learning new life skills.
B. Saving money for the future.
C. Getting better grades at school.
