【感受生活】材料一：有一位优秀学生小亮，从小就有多种兴趣爱好：下棋、弹琴、书法、诗词、打篮球、登山旅游等他样样喜欢。当他以全省理科高考第一名的成绩考入北京大学后，他用怀恋的语气说：“从小学到中学，我有那么多的兴趣爱好，不管我现在是否依然喜欢，却都给我带来了益处。从棋里，我学到了大局观和均衡感；从书法里，我学到了结构和章法；从灯谜里，我学到了联想和组合；从诗词里，我学到了音律美和对称美。这些爱好曾使我努力学习，深感生活的充实，从中学到的知识至今仍然能不断地给我智慧和启迪。”
材料二：初中生小明在寒假中受到他人的引诱，学会了吸烟、打麻将和一种称为“斗地主”的赌博游戏，开学后，已无心再学习，成绩直线下降。

①国家安全是国家生存与发展的重要保障

②国家安全是人民幸福安康的前提

③我国积累了巨大实力，不用担心国家安全

④维护国家安全的主要任务就是维护国土安全

    Here are Important Travel Notices from United Airlines, March 20, 2016 7:12 AM. Information is updated as it is received.

    ⒈Travel and the Zika virus

    If you have a ticket for travel to a country affected by the Zika virus(as listed on the CDC website) and have concerns, please contact the United Customer Contact Center with any questions or changes to your reservation. Customers advised to avoid the affected regions based on CDC guidance may change their destination or travel date without a fee or may choose to receive a refund(退款) if their tickets were booked before February 29,2016. The new travel date must be within the validity of the ticket. Additional charges may apply if there is a difference in fare for the new travel route.

    ⒉Longer lines at security checkpoints

    Procedural changes at TSA checkpoints throughout the United States may result in longer lines at security checkpoints. Please plan accordingly and allow for extra time at the airport. The TSA advises arriving at the airport two hours before your flight for US travel and three hours before for international travel. To save time at security, we encourage you to visit www.tsa.gov.com and apply for TSA pre-check.

    ⒊Notice for flight departing the European Union, Norway and Switzerland

EU Regulation 261/2004 requires airlines to provide the following notice: If you are not allowed to board or if your flight is canceled or delayed for at least two hours, ask at the check-in counter or boarding gate for the form, stating your rights, particularly about compensation assistance.