选项 | 实验操作 | 实验现象 | 结论 |
A | 打开盛有浓盐酸的瓶盖 | 瓶口出现白烟 | 浓盐酸具有挥发性 |
B | 向紫色石蕊溶液中通入CO2气体 | 溶液变成红色 | 不能说明CO2与水反应 |
C | 向盛有水的烧杯中加入活性炭 | 异味消失 | 活性炭与水发生化学反应 |
D | 向H2O2溶液中加入少量CuO粉末 | 产生大量气泡 | CuO是该反应的催化剂 |
材料一:科技创新助力解决 “看病难”的问题。在深圳,通过AI导诊小程序,可以1秒精准匹配医生,直接就医、检查、取药,实现看病“最多跑一趟”;在浙江德清,“AI+医共体”助力实现“把病人留在基层”,患者可以在家门口就能享受优质医疗资源。(注:AI即人工智能)
材料二:2021年10月15日,国务院发布《关于深入推广福建省三明市经验 深化医药卫生体制改革的实施意见》。2012年,三明市在全国率先开始公立医院综合改革,率先对高回扣药品进行重点监控,率先实施药品零差率销售改革。后来,三明市继续规范诊疗行为、降低药品耗材费用、合理调整医疗服务价格,既减轻群众负担,又促进医药产业创新和健康发展。“三明医改”是解决群众“看病贵”的一项伟大创造。
材料三:近年来,新医药与生命健康产业已成为南京重点打造的产业地标之一。南京市出台《生命健康科技创新行动计划》等多项政策措施,以加快龙头医药企业培育、强化关键核心技术攻关、推进创新产品推广应用、加快互联网医院建设。而对生物医药企业来说,要提高创新能力,需要有持续的资金和人才保障。
A. He also wrote the sport's official rules. B. Soccer is the world's favorite sport. C. Playing soccer is good for your health. D. But one reason is how simple the sport is. E. People love soccer as well as their countries. F. It's hard to say where soccer's birthplace is. G. Soccer performances are pleasing to the eyes. |
It has around 3 billion fans—nearly half the world's population! And about 300 million people play this game. That's 4 percent of the world's population!
Many people in old days played the early form of this modern game. Cuju(蹴鞠), a ball-kicking game in China, was reported as early as 2, 500 B. C. Around the same time in Greece, people were also playing a similar ball game without using their hands.
But modern soccer didn't become official(官方的)until 1863. An Englishman called Cobb Morley introduced the idea of a soccer association(联盟). From then on, other associations in the countries were set up. They came together—to make up the FIFA, which organizes the World Cup.
It's not easy to tell what makes soccer so popular. Soccer needs only two feet and a ball. This makes it a sport that developing countries can play easily. Some of the sport's best players come from these poor nations.
The sport's no-hands rule makes beautiful dance—like movements on the field. What's more, this sport excites the heart. Teams might score only a few times each match, so matches can turn around suddenly.
No one knows who will win at the next World Cup. But one thing is certain: The world will be watching.
①氦气 ②氧气 ③酒精 ④干冰 ⑤小苏打 ⑥大理石