Task 1 is flow chart about the national park in USA after the fire disaster, the trees refresh the environment 300 plus years period。 是讲在美国黄石公园的一次火灾后，森林的生长情况。
Task 2 is about there a gap of living in cities and countryside. what is the reasons in your country how can reduce the difference 是说在城市和乡间和范围发展越来越大？是否在你的国家也一样？有什么不同？
