The world we live in is full of amazing things. Do you know the following things?
★Chocolate tastes nice but it may make the little dog die.
★We may sleep for eight hours at a time but a snail(蜗牛)may sleep for three years.
★Our ears and nose become bigger when we grow up but eyes keep the same after a person is born.
★You may think a hear walks slowly. In fact, it can run as fast as a horse.
★Cats won't die if they fall off very high places because they can turn themselves up the right way.
★The largest animal on the earth is the blue whale(鲸). It weigh about 80 tons(吨)—more than 24 elephants.
★Most animals will die soon if they lose the head. But a cockroach(蟑螂)can live for nine or ten days when they have no head.
★Not all birds can fly. About forty kinds of birds can't fly, like the penguin(企鹅)and the ostrich(鸵鸟).
