Papercutting or paper cutting is the art of paper designs. The art has evolved all over the world in different cultural ways. One traditional quality most ____ (style) share in common is that the designs are cut from a single sheet of paper, not multiple sheets as in collage (拼贴).

    The art appeared during the Han dynasty after the Chinese official Cai Lun invented paper. The oldest ____ (survive) paper cut out is a symmetrical (对称的) circle from the 6th century found in Xinjiang China. Papercutting continued to develop ____ (steady) during the Song and Tang Dynasties as ____ unique form of decorative art.

    Papercutting appeared in West Asia in the 16th century. The knowledge of paper making did not reach Europe until the 13th century. In Switzerland and Germany, for example, it was not until the 16th century____ papercut art was established.

    Although it is popular around the globe, only the Chinese paper cut ____(list) in the UNESCO Intangible Cultural Heritage Lists in  2009. Modem paper cutting has developed ____ a commercial industry. Papercutting ____ (remain) popular in modem China, especially during the Chinese New Year or weddings.

    Jianzhi (剪纸) is a traditional style of papercutting in China. Jianzhi ____ (practice) in China since at least the 6th Century AD has different uses in Chinese culture, all of which have different meanings or intentions.____ people generally want to achieve is to wish for a better future. And red is the most commonly used color.

已知集合$A=\left\{x|x<3\right\}$，$B=\left\{x|{\log }_{2}x>0\right\}$则$A\cap B=$(  )

面部识别技术在生活中的广泛运用，推动了时代科技的飞速发展。与指纹识别技术相似，面部识别技术具有的生物基础，使人脸具有唯一性和不易复制性。计算机以非接触的方式获取识别对象的面部图像后，与数据库图像进行比对，完成识别过程，人面识别的准确率越高，人面数据库的数据覆盖率就越高。面部识别技术非常适合用于机场、地铁等人群密集场所的安保。

①时代科技的飞速发展，推动了面部识别技术在生活中的广泛运用。

②____。

③____。