阅读下列材料：
材料一：“聪明睿智，光被遐荒，建此伟业，雄立东方。”
材料二：“中华开国五千年，神州轩辕自古传。创造指南针，平定蚩尤乱。世界文明，唯有我先。”
请回答：
（1）材料一是为称赞谁而写的祭文？
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（2）材料二的“神州轩辕”指的是谁？他被尊称为什么？
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（3）材料二中的“创造指南针，平定蚩尤乱”与哪个事件有关？
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（4）“轩辕”后来和哪个部落结成联盟？形成日后的哪一个民族？
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（1）黄帝。
（2）黄帝；“人文初祖”。
（3）炎黄战蚩尤。
（4）炎帝；华夏族。
Big ocean fish have almost been endangered since the start of business fishing in the 1950s. The scientists found that the number of large fish has dropped by 90 percent in the past fifty years. The study took ten years. The researchers collected records from fishing businesses and governments around the world. The magazine Nature published(发表)th  e findings.The scientists say the common way called longline fishing is especially harmful to large fish. This way includes many fishing lines that are connected(连接) to one boat. If these lines are joined together, they can reach one hundred kilometers. They hold thousands of sharp metal hooks(钩) to catch fish. Longline fishing is especially common in the Japanese fishing industry. Records showed that Japanese boats used to catch about ten fish for every one hundred hooks. The study says longline fishing boats now might catch one fish per hundred hooks. The scientists say business fishing can destroy groups of fish much faster than in the past. It’s not the only worry that the number of large fish is becoming smaller and smaller. What’s worse, they are smaller in size than their ancestors(祖先). 根据短文内容完成表格，每空一词。 What is happening to ocean fish?
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