阅读下列材料：

材料一 “要有原子弹，在今天的世界上，我们要不受人家欺负，就不能没有这个东西。”

                                            ——***1956年《论十大关系》

材料二 经济体制，科技体制，这两个方面的改革都是为了解放生产力。新的经济体制，应该是有利于科技进步的体制。新的科技体制，的应该是有利于经济发展的体制。

                                ——邓小平1978年《在全国科技工作会议上讲话》

材料三 江泽民指出：“‘二战’后，以电子信息。生物技术和新材料为支柱的一系列高新技术取得重大突破和飞速发展，极大地改变了世界的面貌和人类的生活。科学技术日益渗透于经济发展和社会生活的各个领域，成为推动生产力发展的活跃的因素。并且国际间的竞争，说到底是综合国力的竞争，关键是科学技术的竞争。”“科技的发展，知识的创新，越来越决定着一个国家，一个民族的发展进程。”

                                              ——江泽民

请回答：

小强是个爱动脑筋的学生，他发现雨水多的年份蝗虫很少，而干旱的年份蝗虫特别多．他想通过探究产生这种现象的原因，你能帮助他完成吗？实验器材和用具：花盆、土壤若干、活蝗虫成虫若干、新鲜青草、铁丝网罩．

去年，包括北大、清华等高校专家在内的15名公民联名向总理写建议书，提请国务院审查并修改教育部《普通高等学校招生工作规定》，呼吁取消有关“学生在户籍所在地报名参加高考和招生”的规定。15名公民联名向总理写建议
①表明其有强烈的参与民主决策的热情和意识
②是通过社情民意反映制度参与民主决策
③是通过专家咨询制度行使民主监督权
④是通过专家咨询制度参与民主决策

半圆的圆心角（　　）

阅读理解

Sea Life Melbourne Aquarium (水族馆)

    The all-new Sea Life Melbourne Aquarium, situated in the heart of Melbourne's CBD, is one of Victoria's leading visitor attractions and an unforgettable outing for the whole family. Having 12 amazing zones of discovery, Sea Life Melbourne Aquarium is the very place that you cannot miss when you visit the city.

    * Opening Times

    Sea Life Melbourne Aquarium is open from 9:30 am until 6:00 pm every day of the year, including public holidays. Last admission is at 5:00 pm, one hour before closing.

    * Location ( 位置)

    Sea Life Melbourne Aquarium is located on the corner of Flinders Street and King Street, Melbourne. It is siyuated on the Yarra River, opposite Crown Entertainment Complex.

    * Getting to Sea Life Melbourne Aquarium

    Train

    The Sea Life Melbourne Aquarium train stop is located on the free City Circle Tram route (公交线路) and also routes 70 and 75. City Circle trams run every 10 minutes in both directions.

    Shuttle Bus

    The Sea Life Melbourne Aquarium is a free bus service, stopping at key tourist attractions in and around the City. Running daily, every 15 minutes from 10:00 am to 4:00 pm.

    Car Parking

    While there is no public car parking at Sea Life Melbourne Aquarium, there are several public car parking lots available only a short walk away.

    * Wheelchair Access

    Sea Life Melbourne Aquarium provides people in wheelchairs with full access to all 12 zones. Each floor also has wheelchair accessible toilets.

    * Terms

    Tickets will be emailed to you immediately after purchase or you can download and print your ticket once payment has been accepted. Please print out all tickets purchased and present at the front entrance of Sea Life Melbourne Aquarium. No ticket, no entry!