How does tourism affect the environment of Antarctica?
A、Tourism causes the ice caps in Antarctica to melt.
B、Carefully-controlled tourism helps its preservation.
C、Tourists won’t affect its environment if they are careful enough.
D、Tourism brings more risks than benefits.
大学英语听说教程3
章节列表
Unit 1 ALL roads lead to Rome Listen to share1Unit 1 ALL roads lead to Rome Further listening3Unit 2 Challenge yourself Listen to understand2Unit 2 Challenge yourself Listen to communicate4Unit 2 Challenge yourself Listen to share4Unit 2 Challenge yourself Further listening2Unit 3 A worderful life Listen to understand2Unit 3 A worderful life Listen to communicate8Unit 3 A worderful life Listen to share7Unit 3 A worderful life Further listening2Unit 4 Here and there Listen to understand2Unit 4 Here and there Listen to communicate4Unit 4 Here and there Listen to share3Unit 4 Here and there Further listening3Unit 5 Workplace wisdom Listen to understand2Unit 5 Workplace wisdom Listen to communicate4Unit 5 Workplace wisdom Listen to share4Unit 5 Workplace wisdom Further listening3Unit 6 Listen to understand2Unit 6 Listen to communicate5Unit 6 Listen to share1Unit 6 View the world1Unit 6 Further listening1CET4 Listening practice CET4 Listening practice（一）10CET4 Listening practice CET4 Listening practice（二）10CET4 Listening practice CET4 Listening practice（三）10