Located between the 16th and the 18th floor, ______ I call my “home” is more like a “bird's nest”.
A：which
B：that
C：what
D：where
①企业和消费者共同享有单车的所有权和经营权
②顺利实现了所有权和使用权的分离，消费者享有一定时期的使用权
③有利于绿色消费、保护环境
④共同享有单车的价值和使用价值
The water in the ____(河流) is clean.
