Номер 7, страница 82 - гдз по английскому языку 9 класс учебник Вербицкая, Маккинли

Unit nine.

Track sixty.

Researchers have learned some surprising things about elephants. New research shows that elephants communicate using subsonic noises. In other words, noises that are too low for the human ear to hear.

What's amazing is that these sounds can travel more than seven kilometers away.

It seems that elephants from different family groups will often communicate with each other every evening, usually after sunset. Unfortunately, we don't yet understand what they are saying to each other. Perhaps they're swapping the latest gossip.

Elephants are peaceful animals and don't have many enemies in the wild. But if a young elephant is attacked, the whole family will try to rescue it. Adult elephants use noise to frighten any predator. They stomp their feet, scream, et cetera. Believe me, it's a really terrifying noise.

Finally, people say that elephants never forget. That probably isn't true, but generally elephants are very intelligent animals. In fact, experts believe that the elephant's psychological maturity is the same as a six-year-old human.

Now, any questions before I move on?