题目:
The primary purpose of the passage is to discuss the
选项:
A、techniques used in certain experiments on social learning in birds
B、reasons for the differences between social learning in birds and in mammals
C、question of how social learning manifests itself in birds
D、basis for a widespread belief about a difference in behavior between birds and mammals
E、possible reasons why birds may or may not learn from each other in a particular way
答案:
C