Choose the correct variant
Chose the correct answer.
Dolphins have:
- Very small brains.
- Normal brains like humans.
- Very well developed and big brains.
Dolphins’ brains have:
- Two hemispheres.
- Three hemispheres.
- Four hemispheres.
According to the text:
- Dolphins like to play and have fun.
- Dolphins have complicated emotions and are very social.
- Dolphins are social because they like humans.
When dolphins meet:
- They are scared of one another.
- They have a way to introduce to each other.
- They start to play.
Scientists have experimented:
- To teach dolphins the sign language.
- To teach dolphins to use names.
- To teach dolphins how to properly introduce themselves.