Do you have any foreign friends? Do you know their characteristics（特征）?

    The Germans are very quiet and they always keep calm. They don't like to speak more words. They look very serious. They like different kinds of amusements（娱乐）. The Germans are very hard－working. They like tidiness, especially the women, who always keep their home clean.

    In some ways, the Englishmen look the same as the Germans. They are very quiet and never talk too much with the strangers. They are really polite, so we often hear they say “Thank you.” Or “Sorry.” The gentlemen are also the Englishmen.

    The French's holidays are very long. They like traveling and usually spend their long time staying in other countries. The Frenchmen are more outgoing than the Germans. It is very easy to make friends with them.

    Compared to the Frenchmen, the Americans are more outgoing. And they are even opener than all of the Europeans（欧洲人）. They don't like to depend on others. So it is very common that the students do part-time jobs in their free time. And in Americans' eyes, success is an important part in their life.

已知等比数列{a_n}满足2a₁+a₃=3a₂，且a₃+2是a₂，a₄的等差中项．

（Ⅰ）求数列{a_n}的通项公式；

（Ⅱ）若b_n=a_n+log₂$\frac{1}{a_n}$，S_n=b₁+b₂+…b_n，求使 S_n﹣2ⁿ⁺¹+47＜0 成立的正整数n的最小值．

欣赏右边的漫画《宅童》。你最想对“宅童”说的是（     ）

①封闭自己，脱离现实世界，会使自己陷入孤立

②这种把自己“宅”起来、闭锁自己的做法，会使自己的人际关系萎缩 

③应该保持积极开放的心态，接触更多的人，让友谊之树枝繁叶茂

④在虚拟世界中获得成就感也能形成良好的性格，人生才更精彩

阅读下面这段文字，根据拼音写出汉字。

    听云南的民歌，聆听chún____朴自然的歌声；吃高邮的xián____鸭蛋，感受平淡有味的文罕；尝温州的八宝酒，品味浓厚地道的家pēi____；叹天津的杨八，羡煞左右逢yuán____的一张好嘴。