河北省正定县2015高考英语暑假练习（4）（答案或解析）
阅读下面短文，从每题所给的四个选项(A、B、C和D)中，选出最佳答案。
It is reported that conservation groups in North America have been arguing about the benefits and dangers of wolves. Some groups believe wolves should be killed. Other people believe wolves must be protected so that they will not disappear from the wilderness (荒野)
