People like dolphins because they are both lovely and clever. They have a(n)   (1)   IQ (智商).Dolphins can ‘talk’. Scientists try to ‘talk’ with dolphins, and the   (2)   make them surprised. They find dolphins may understand them so well.

Most animals enjoy playing, but dolphins like to make their games different. On a beautiful day in 1997, scientists on a beach   (3)   a little dog going into the sea. They were surprised to see the dolphins come up to the dog and then start throwing (扔) it into the air. The dog   (4)   the ‘game’ and kept playing with the dolphins for over an hour. 

Dolphins live in  a very different world from   (5)  , but they are very good at our ‘IQ tests (测试)’. For example, in the picture above, a dolphin jumps   (6)   the water when he hears a whistle noise (哨声). He does this because he will get a fish   (7)   an award.

There is   (8)   much to learn about these lovely friends.