重庆市南开中学2014
高考英语阅读理解联合训练（5）及答案阅读理解- the united states has always bee n a country of many cultures. before europeans came to north america, many groups of native americans lived here. different native american groups had different cultures. the first europeans in the united states were from england and holland, but immigrants came from all european countries. many people also immigrated
