在一些城市的繁华街道上，我们经常可以看到一种装置（如图所示），请问它是什么装置？
下面表格中列出了一些声音的分贝数和人的感觉，结合表中内容，在图中你看出了什么问题？应该采取哪些具体措施？（答出一条即可）
从图中可以看出噪声已达到90dB，影响人们正常的学习和生活，长期生活在这样的环境中会影响听力，并引起多种疾病．
具体措施：机动车严禁在市区高声鸣笛；在道路两旁植树；安装隔声板；临近路旁生活的居民在车辆高峰期应关闭门窗；戴上防噪声的耳塞等．
| 根据短文内容,从短文后的选项中选出填入空白处的最佳选项.选项中有两项为多余选项. — Good morning, madam. Can I help you? — Well, could you show me that overcoat, the silver gray one in the middle? — Certainly. This one? 1 . It must be very nice on you and it's 100 percent wool. — OK, could I try it on? — Sure. Um... , it looks really good. Look at it on you. How perfect it is! — Maybe. 2 — Would you like to try this one on? — Good. This one fits me better. How much does it cost? — We sell it at $ 195. — 3 And I'd like that blue sweater on the right, too. How much is it? — We charge it for $ 260. 4 — But that's too expensive, I'm afraid. — How about this one? It's much cheaper.-No, thanks. 5 OK, here is $ 200. — Thanks, and here is your change. Welcome to be here often. — OK. See you.
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