China's present environment situation is from bad to worse and if we _________ now to protect the environment, we’ll live to regret it.

A．hadn’t acted

B．haven’t acted

C．don’t act

D．won’t act

( )能作为城市规划管理和综合开发、地价评估及土地有偿使用的依据。

A．修建性详细规划

B．目的性详细规划

C．专项性详细规划

D．控制性详细规划