A

    These days it is found that school students hardly have any sports. It is because they have no 1in sports. It may not be true. They often say they have much 2 important things to do.

    What are these important things? Exams! They have to 3 ready for all kinds of exams and tests at school.

    Because of their parents and teachers, they have to work harder and spend most of their time reading. As for the students themselves, they don't want to 4 the lessons because they want to improve(提高) their studies. So it is necessary to give all of their free time to their studies and give up their school sports.

    Good education can't go without physical training. It is true that students aren't able to study well if they are weak. Without a strong body you can 5 do anything well. Then how can you make great success in life?

阅读材料，回答相关问题
材料一：割香港岛给英国；赔款2100万元；开放广州、厦门、福州、宁波、上海五处为通商口岸；英商进出口货物缴纳的税款，中国须同英国商定。
材料二：清政府割辽东半岛、台湾、澎湖列岛给日本；赔偿日本军费白银二亿两；允许日本在中国开设工厂；增辟通商口岸等。
材料三：清政府赔偿白银4.5亿两，以海关等税收作担保；清政府保证严禁人民参加反帝活动；清政府拆毁大沽炮台，允许帝国主义国家派兵驻扎北京到山海关铁路沿线要地；划定北京东交民巷为使馆界，允许各国驻兵保护，不准中国人居住。
(1)以上材料分别出自中国近代史上的三个不平等条约，请写出它们的名称。
(2)材料二中对中国危害最大的条款是什么？
(3)材料三中的条约是在哪次战争后签订的？ 条约签订后，中国的社会性质发生了怎样的变化？
(4)结合以上的史料，说说你的感悟。