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“万国尽征戍，烽火被冈峦。积尸草木腥，流血川原丹。”这是杜甫在《垂老别》一诗中描写的安史之乱造成的惨状。下列对安史之乱发生的原因分析不正确的是A. 唐朝的国势从此由盛转衰B. 权臣杨国忠、李林甫等营私舞弊C. 中央与地方力量失去平衡D. 唐玄宗追求享乐，朝政日趋腐败 答案：【答案】A【解析】依据所学可知，开元末年以后，唐玄宗追求享乐，任人唯亲，权臣杨国忠、李林甫等营私舞弊，朝政日趋腐败。社会上的各种矛盾越来越尖锐，边疆形势也日趋紧张。各地的节度使逐渐集军权、行政权和财政权于一身，势力膨胀。中央与地方的力量对比失去平衡，形成外重内轻的局面The Sydney Opera House has a very interesting history. 【1】 all started in the 1940s, when the Sydney Symphony Orchestra had nowhere to play. The orchestra’s conductor, Eugene Goossens, asked the Australian government to think about building a place and the government 【2】 (final) agreed to build an opera house in 1954.The government held an 【3】 (nation) competition to find a design for the opera house. Many of the 233 designers from around the world 【4】 entered the competition were famous, but the design of an unknown Danish architect 【5】 (name) Jorn Utzom was chosen as the 【6】 (win).While drawing up the plans, Utzon remembered the temples he 【7】 (see) in Mexico before and used them as his inspiration for the base 【8】 the opera house in Sydney The building of the opera house began in 1958, but Utzon had still not finished his plans He did not like his first plan as the concrete roof shells did not work. His new idea was 【9】 (make) the shell shapes on the roof into the shape of a ball. That way, the same ball mould (模型) could be used for several roof 【10】 (part). In 1962, the government agreed to the new ball roof idea. The building was completed and in November 1973, the Sydney Opera Hope was opened by Queen Elizabeth II.