综合写作

阅读：

Due to human activity and diminishing habitants wolves population gradually disappears in the American west. Some people want to reintroduce wolves from place where there is plenty of wolves. The author thinks the action holds potential dangers.

黄石公园重新引进狼的三种风险

First reason: wolves are predators as a result they can disturb the balance of local environment, e.g. in the Yellowstone National Park, if wolves are restored to local area, they can deplete the elk polulation.

狼会破坏生态平衡，把动物吃了。

Second reason: wolves can harm ranchers’ economic profit. If wolves are hungry, they will possibly capture livestocks raised by local ranchers therefore causing farmers to loss money.

对家畜有影响，影响农场主经济。

Third reason: wolves population will eventually grows big engouh and therefore meet with local people; wolves can harm people and bring potential danger to human being.

对人有危害，因为不断扩展自己觉得的领域。

听力：

1.       reintroducing wolves 对ecosystem 有好处，可以restore balance，教授举例：狼灭绝了，elk 的数量become unnatural large，现在reintroduce狼，可以让elk的数量恢复正常，也可以让一些植物重获新生。

2.       狼只会在natural food短缺的情况下去攻击家畜，而农场也会收到政府发放的奖金，如果家畜受到攻击，文章中的economic threat不成立。

3.       很多去国家公园的人只是听到了狼的嚎叫，叫人感到害怕，而实际上在美国历史中there are few wolvest attack people的事情，而且这些事故中没有一例是reintroducing wolves造成的。

独立写作：

Do you agree or disagree with the following statement: People rely on their neighbors less now than they did in the past.