【简答题】The illegal ivory(象牙) trade has been a major problem in Africa for decades. Poachers have killed hundreds of thousands of elephants to obtain ivory. Now, affected areas are taking action. The Internat...
【单选题】听力原文: Authorities in Brazil say they have completed slaughtering hundreds of cows in one of the country's key cattle states in a move to prevent the spread of hoof-and-mouth disease. Police supervised...