2.Listen the this introduction about bears.Then correct the following passage.
Bears are fierce animals. A bear usually has a large body with short, strong legs, a long nose and a short tail. While polar bears eat meat and giant pandas feed on bamboo, other bears eat both meat and plants. Bears can’t run as fast as tigers and lions. They are good swimmers. They are also good at climbing trees. The number of bears is getting smaller and smaller. There are only eight kinds of bears in the world now. We should protect them and stop them from disappearing.