Wolves live in the northern half of the world. They can live in forests on open plains, or in the snows of the Arctic(北极). They look like big dogs (A) ________ long legs and a wide head.
In fact, all of our dogs probably came from wolves many years ago.①
They are about two meters long and three quarters of a meter tall. If a wolf gets enough food, it can weigh about 40 to 50 kilograms. Wolves usually eat small animals such as rabbits. But they also hunt together to try to kill big animals. If they catch and kill a big animal, they eat as much as they can.②
Wolves live in groups. (B)每组中大约有六至八匹狼。Only one pair of wolves will have cubs(幼崽), (C)but all the members of the group will help to look after the cubs patiently.If the cubs are in danger, the whole group will protect them.③
People often think that wolves are dangerous animals, (D) ________ this is not true. Wild wolves are usually afraid of humans. If you are in a forest and see a wolf, it will probably run away from you.
