单项选择题
Questions 11 to 13 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now, listen to the passage.
Which of the following is CORRECT（）
A．Dogs are now treated as part of a family.
B．Dogs still perform all the duties they used to do.
C．People now keep dogs for the same reasons as before.
D．Only old people are seen walking their dogs.