下面的大陆漂移示意图，符合从2亿年前到现在顺序的是（    ）

已知抛物线x=$\frac{1}{2}$y²上一点P的横坐标为1，则点P到该抛物线的焦点F的距离为（　　）

A: Hello, I'm Barry Lai, a reporter with TV News. Would you mind ____a few questions about the events of this afternoon?

B: Not at all

A: All right then. ____were you when the birds landed?

B: I was shopping in Central.

A: How many birds do you think there were?

B: I'd say there were about 1,000 birds in all.

A: Can you tell me what ____looked like?

B: They were small brown and green birds.

A: And what did they do, exactly?

B: Well, they ____and landed in Statue Square. They stayed there for about 15 minutes before flying off again.

A: How did people react?

B: Oh, everyone was amazed. Traffic stopped ____and the police had to be called.

A: OK. Thanks very much for talking to me.

设f（x）是定义在R上的奇函数，且对任意a、b∈R，当a+b≠0时，都有$\frac{f\left(a\right)+f\left(b\right)}{a+b}>0$．

（1）若a＞b，试比较f（a）与f（b）的大小关系；

（2）若f（9^x﹣2•3^x）+f（2•9^x﹣k）＞0对任意x∈0，+∞）恒成立，求实数k的取值范围．