205722.(2018•西安中学•高二上期末)听下面一段独白,回答第17至第20四个小题. 17.Where is the park located? A.In West Africa.B.In Southeast Asia.C.In South America. 18.What do we know about the park? A.There are over 900 types of plants. B.Visitors can't get close to the birds. C.There's a lot of room to walk around. 19.How high is the waterfall? A.30 meters.B.50 meters.C.100 meters. 20.When does the All Stars Bird Show start? A.At 9:00am.B.At 11:00am.C.At 5:00pm.