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     Cultural relics (文物) carry rich history. But sometimes, they seem like something that only older people enjoy. Recently, a CCTV show about cultural relics has taken young people by storm. It's called National Treasure．

     The show has been highly praised on Bilibili.com. This website is believed to be China's biggest pop culture website for young people. So how can a show about relics from hundreds or even thousands of years ago attract so many young viewers?

     The show's 10 episodes (集) show 27 treasures from nine museums across China. Instead of telling the stories and history behind them, the show invites famous actors to act out these stories on stage．

     Actor Wang Kai plays Emperor Qianlong on the show．He meets ancient artists, as well as his father, Emperor Yongzheng, in a dream．They criticize Qianlong's taste in such fancy designs. But Qianlong argues by saying that this kind of design is the best way to show the prosperity of his time.

     This soon became a hot topic online. Screenshots of Wang Kai's performance were made into popular memes. Internet users also compared pictures of vases from the times of Qianlong (1736-1796) and Yongzheng (1678-1735)．

     The stars might be part of the reason that young viewers enjoy the show. But it is still the treasures themselves that are the main focus. “The treasures make me so proud of our country and culture”, internet user “Fengshiyuci” wrote on Sina Weibo. “After watching the show, I want to visit all the museums in China,” wrote by another user with the screen name “Pilipalaxiong”．

街头上有许多便宜的“黄金”饰品出售，实际上它们不是黄金，而是铜锌合金，因其具有较好的机械性能和光泽度，所以常被做成饰品．现取30g该合金样品，投入到196g某浓度的稀硫酸中，恰好完全反应后，剩余的溶液和残余固体总质量为225.6g．请计算： 

法兰西第一帝国实质上是一个(    )

为研究“绿豆种子的呼吸”，某同学将一定量萌发的绿豆种子平均分成两份（其中一份煮熟），同时分别放入如图所示的装置，关闭止水夹并在黑暗处放置12小时后进行实验：①测量瓶内和瓶外环境的温度，读取温度计示数；②打开止水夹并挤压塑料瓶，观察试管中澄清石灰水的变化；③移开双孔塞，用燃烧着的蜡烛放入塑料瓶内，观察蜡烛的燃烧情况，实验现象记录如下表：

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