听一篇短文，回答16—20题

(   ) 16. What does the passage mainly talk about?

A. Life of the old in Canada

B. Pets in Canada

C. How to take good care of pets

(   )17.Why do they give their pets injections(注射)before keeping them at

their houses?

A. The pets are sick.

B. They want them to sleep on the way home.

C. They want to stop them from carrying diseases.

(   ) 18. What can we know from this passage?

A. Canadians hate animals.

B. Canadians don’t keep pets inside houses.

C. Canadians love animals.

(   ) 19. Why do children leave their parents when they grow up in Canada?

A. They wouldn’t depend on(依靠) their parents any more.

B. They can only find jobs far from their parents.

C. Their parents’ houses are too small.

(   ) 20. Which of the following is True?

A. People buy animal food only at the supermarket.

B. Pets eat better than people.

C. Almost every family has a bird feeder in the house.