2012年6月9日是我国第七个“文化遗产日”,浙江全省开展了形式多样、丰富多彩的活动,以激活那些散落在我们身边的宝贵文化遗产。保护文化遗产有利于（   ）

①集中展示民族文化和表达民族情感

②保护国家和民族的历史文化成就

③继承和弘扬优秀的中华民族传统文化

④弘扬文化的民族性,维护世界文化多样性

借助网络渠道，党的十八大以来的短短数月间，已经有不少腐败分子被民间举报掀翻落马。民间反腐释放的强大威力告诉我们（   ）

阅读材料，完成下列要求。

材料一：司马炎（晋武帝，265年建立西晋，280年统一全国，290年病逝）对人口增殖，颇为重视。女子年十七，父母不给出嫁，由官吏代择配偶。一家有五个女儿（奖励养女儿，因为民间保存战国以来生女不育的恶俗），得免役。又发遣邺城官奴蜱屯田，代田兵（兵士种田）种稻，奴婢各五十人为一屯，让奴婢配成夫妇。当时户口的确很快发展起来，太康元年（公元280年），户有2459840，口有16163863（其中包括复业的流亡户口）。三国以来，还是最高的记录。

——摘编自范文澜著《中国通史简编》（上）

材料二：第一个五年计划建设全面展开以后，国家于1953年10月对粮食等主要农产品采取了计划收购和计划供应，即实行统购统销政策。随着大规模经济建设的开始，出现了全国粮食供销矛盾严重的问题。由于城镇和工矿区人口猛增，1953年城镇人口达7826万，比1949年增加2061万人，致使城乡粮食供应面迅速扩大，对商品粮食的需求量急剧增加。但是，分散的小农经济增加生产和提高商品率的能力有限，小农余粮户又有待价惜售心理，加之东北等产粮地区受灾，造成1953年国家粮食收购量减少。当时是收购的少，完不成计划；销售的多，大幅度突破计划，情况十分严重，不少地方开始出现混乱。特别是当时的粮食市场是自由市场，粮食形势一吃紧，私商同国家争夺粮源的斗争十分尖锐，大批粮贩子活动于城乡之间。当时主持财经工作的陈云指出：粮食紊乱时间要提早到来，范围也要扩大，从乡村一直到大城市。其结果是物价必然波动起来并使国家建设受到影响，使人心不安。

——摘编自何沁主编《中华人民共和国史》（第二版）

    In 1943, when I was 4, my parents moved from Coeur d'Alene, Idaho, to Fairbanks, Alaska, where adventure was never very far away.

    We arrived in the summer, just in time to enjoy the midnight sun. All that sunlight was fantastic for Mum's vegetable garden. Working in the garden at midnight tended to throw her timing off, so she didn't care much about my bedtime.

    Dad was a Railway Express agent and Mum was his clerk. That left me in a mess. I usually managed to find some trouble to get into. Once I had a little fire going in the dirt basement of a hotel. I had tried to light a barrel(桶) of paint but couldn't really get a good fire going. The smoke got pretty bad, though, and when I made my exit, a crowd and the police were there to greet me. The policemen took my matches and drove me home.

    Mum and Dad were occupied in the garden and Dad told the police to keep me, and they did! I had a tour of the prison before Mum rescued me. I hadn't turned 5 yet.

    As I entered kindergarten, the serious cold began to set in. Would it surprise you to know that I soon left part of my tongue on a metal handrail at school?

    As for Leonhard Seppala, famous as a dog sledder(驾雪橇者), I think I knew him well because I was taken for a ride with his white dog team one Sunday. At the time I didn't realize what a superstar he was, but I do remember the ride well. I was wrapped(包裹) heavily and well sheltered from the freezing and blowing weather.

    In 1950, we moved back to Coeur d'Alene, but we got one more Alaskan adventure when Leonhard invited us eight years later by paying a visit to Idaho to attend a gathering of former neighbors of Alaska.