某水库溢洪道加固工程，控制段现状底板顶高程30.0m，闸墩顶面高程42.0m，墩顶以上为现浇混凝土排架、启闭机房及公路桥。加固方案：底板顶面增浇20cm混凝土，闸墩外包15cm混凝土，拆除重建排架、启闭机房及公路桥。其中现浇钢筋混凝土排架采用爆破拆除方案。夜间施工时，却发生了高空坠落死亡4人的事故。本事故发生后，及时上报，并组成了事故调查组。
问题：
指出本工程施工事故等级，事故调查组应如何组成
参考答案：(1)Ⅲ级(重大质量与安全事故)。
(2)事故调查组应由安全生产监督管理机构、公安及消防机关、监察机关、工会、水行政主管部门和有关技术专家组成。
| 请阅读下面短文。根据短文内容从下面方框内的七个选项中，选择五个还原到文中，使短文意思通顺、结构完整。 | |
 1. ______ 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! 2. ______ Many people in old days played early forms (形式) of this modern game. Cu ju (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). 3. _______ 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. 4. ______ Soccer needs only two feet and a ball. This makes it a sport that developing countries can easily play. Some of the sport' s best players come from these poor nations. 5. _____ 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.
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