A:y=3(x﹣2)2﹣1
B:y=3(x﹣2)2+1
C:y=3(x+2)2﹣1
D:y=3(x+2)2+1
提示:⒈When and where will you go?
⒉How will you get there?
⒊How long will you stay there'?
⒋What will you do there?
⒌Why do you want to do these things there?
My holiday plan
聚落的建筑风格与当地的自然环境密切相关,形成了独具特色的适应当地自然环境特别是适应当地气候特点的民居。下面的民居适应热带雨林气候的是( )
下图为人体特异性免疫示意图,有关叙述正确的是( )
如图所示,O是直线AB上一点, 图中小于180°的角共有( )