Sailing
   Welcome to our TV show On the Go. Today we are going to talk about an exciting sport—sailing. First let’s talk to Sue，an 18­year­old girl who loves sailing.
Host: When did you start sailing，Sue?
Sue: I started sailing when I was 15 years old.
Host: Is it a difficult sport to learn?
Sue: Yes，it is more difficult than any other sport. For example，you need to learn about the wind directions(方向) and how to move the sails in the right way.
Host: How often do you go sailing?
Sue: I go sailing with my father every weekend.
Host: How far do you go sailing?
Sue: It depends on the wind.
Host：OK. Thank you，Sue. Good luck with your sailing.
Are you interested in sailing after hearing the interview?
If you want to learn sailing，here is a chance for you .The Water Sports Center will organize sailing lessons. Each lesson will cost you ￥20 and there are 5 lessons altogether(总共)．

乔布斯创办的苹果公司是全球最出色的科技企业之一。该公司的一个又一个新产品彻底改变了人们听音乐、看视频的方式。其中苹果手机设计在美国，核心零件由德国、日本、韩国的企业提供，最后在我国深圳组装完成。由材料可知（    ）

①科技改变生活

②经济全球化的趋势

③我国科技的总体水平居世界前列

④人类文明进步离不开科技的贡献

已知函数$f\left(x\right)=\left\{\begin{array}{c}\left(4-\frac{a}{2}\right)x+4\left(x\le 6\right)\\ a^{x-5}\left(x>6\right)\end{array}\right.$$\left(a>0,a\ne 1\right)$ 数列$\left\{a_n\right\}$满足$a_n=f\left(n\right)\left(n\in N^{*}\right)$,且$\left\{a_n\right\}$是单调递增数列,则实数$a$的取值范围（  ）

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