____
以下环境问题中属于生态破坏问题的是 ( )
方程x22-m-y2m-3=1表示双曲线,则m的取值范围是( )
李丽来到了敦煌艺术宝库,她看到了飞天壁画赞誉说,真是( )
— Who will be the host of the party?
— As far as I know, Linda has already ____ (choose).