（）5、How many types of birds are there in the zoo?
A. 15 B. 40 C. 50.
（）6. What will John do?
A. He will study for the exam next week.
B. He will have a class and take notes.
C. He will watch the birds with his friends.
（）7. What are they talking about？
A. How bats find their way. B. How bats look for food C. What bats look like
