题目

任务型阅读 Natural sites and historic buildings,when left alone,can slowly be in bad condition.For these reasons we must protect them. “World Heritage is the title given to places chosen from natural sites and buildings around the world. These places are considered special,valuable and require protection. They may be places of nature or cultural heritages that are the pride of the people in the country Each is a treasure of our planet that must be protected for us and our future generations. Even extremely beautiful natural environments can be in bad condition if they are left aloneFor 9、如图，AB∥CD，直线HE⊥MN交MN于E，∠1=130°，则∠2等于40°．