绿油油　

光____　冷____　孤____　直____　

热____　慢____　湿____　美____

随着人类社会的不断发展，未来城市将承载越来越多的人口。目前，我国正处于城镇化加速发展的时期，部分地区“城市病”问题日益严峻。为解决城市发展难题，实现城市可持续发展，建设智慧城市已成为当今世界城市发展不可逆转的历史潮流。智慧城市的建设在国内外许多地区已经展开，并取得了一系列成果，国内的如智慧上海、智慧双流；国外如新加坡的“智慧国计划”、韩国的“U-City计划”等。智慧城市建设对城市发展最重要的作用是（   ）

根据短文内容，选择正确答案。

    Peter was a small boy. He lived with his parents in a small house near some hills. The people there were all poor.

    One night it was very dry and windy. When everybody was asleep, Peter suddenly heard some noise. It came out from the kitchen. He got up and walked to the kitchen. He found that the wood beside the stove was burning. There was no water tap (水龙头) in the house, so he could not put out the fire. He shouted loudly to wake up everyone in the house. Then he ran out of his house and knocked on the doors of many houses to wake the people up. They all left their houses quickly.

    At last the firemen put out the fire. Many people lost their homes. But luckily, all of them escaped the fire with a whole skin.

十二届全国人大四次会议在北京召开，会议听取、审议并表决通过了“一府两院”工作报告，审议、批准了《中华人民共和国国民经济和社会发展第十三个五年规划纲要》，表决通过了《关于2015年中央和地方预算执行情况》与《2016年中央和地方预算的决议》。表决通过了《中华人民共和国慈善法》。在会议召开期间，全国人大代表纷纷通过网站、博客和公共微信号与民众沟通，就群众关心的热门话题，如推进供给侧经济结构改革，培育发展新动能，发展新经济，围绕群众消费需求升级需求，促进新技术、新产业、新业态成长，提升传统产业水平，提高劳动生产率等，与社会公众进行了广泛的沟通和交流。

观察下列在中国出土的唐代文物──货币，这些出土文物说明了（    ）