已知函数f（x）=3﹣a^x+1的图象恒过定点P，则点P的坐标是（　　）

如图是对鲫鱼、猫、麻雀、大闸蟹、扇贝五种动物分类的概念图，请补充完善。

①____、②____、③____、④____、⑤____．

下面搭配不正确的一项是(      )。

Generally speaking, there _______ be any survivors(幸存者) after such a long time. However, two young people were found _______. Life is super-nature!

①花要____，人要____。

②____，夏满芒夏暑相连。

③____，坏事往往能变成好事。