Reading: 把狼放回local park或forest的不好
1. 影响生态平衡，狼多了，elk 的数量就减少了。
2. 影响local economy，rancher 抱怨自己的羊群被狼吃了啥的。
3. 威胁到人的安全，local people 害怕狼。
Listening: 是说好的，反驳阅读
1. 不但不影响生态平衡，反而促进。没有狼，那种以elk 开头的动物越来越多，狼回归了之后，elk 这种动物终于减少了一点，这样生态慢慢平衡。
2. 狼只在野生动物少的时候才会捕食家畜，而且就算捕了，政府也会赔偿rancher，不会影响他们的收入和local economy
3. 很少有记录说狼袭击人，人只是本身害怕，而不是因为狼，狼嚎吓人
The lecture opposes the view mentioned in the reading with strong supporting evidences presented, aiming to further illustrate that it is positive to let the wolf pack back into the ecology.
Firstly, from the perspective of eco-balance, the professor states his doubt, because according to the lecture, without the existence of predators, the population of elk keeps growing in the area, which has deteriorate the vegetation. The return of wolf is an effective measure to bring the number of elk back to normal.
Moreover, judging from the economic loss of local ranchers, the professor holds a different view, as the lecture further illustrates that wolves will not hunt livestock until there is little prey in the wild. And even if the animals in the farm are hurt, the local government will remedy for the loss.
Last but not least, on the point of safety, the professor never fails to express his concern, because in terms of the listening, there is few records of wolf attack. The only reason why human beings are afraid of wolf is that the wolf howls like a threat. (183 words)
