1 B
2 B
3 C
4 B
5 C
6 D(не уверена,но в основном это брачные песни китов)
7 C
8 B
9 B
10 Communication isn't only talking,a dialogue between two people.We communicate by making sounds, crying, through gestures and signs.And nowadays we have such a clever and useful invention as a compurer.With help of a computer we can communicate with each other even we are a long distance from each other.I think, this is the most important and the smartest invention of our mankind.
