第1题
A.containers
B. trucks
C. trains
D. long haul services
第2题
第3题
A.They function as a hunting preserve.
B.They are restricted to government use.
C.They are heavily populated
D.They contain natural habitats of threatened species.
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!