读长江主要污染物入海通量的变化图，回答下列各题。

    Baron Pierre de Coubertin was a Frenchman. At his time sports were not taught in French schools. De Coubertin believed that sports should go hand in hand with studies. He had an idea. His idea was to begin the Olympics all over again.

    Sports teachers of other countries liked De Coubertin ideas. So in 1896, the modern Olympic Games were held in Athens, Greece. Since then the Olympics have been held once every four years, except three times, when there were wars.

    The modern Olympic games have many foot races and field sports programs. The longest race in the games is called marathon（马拉松）.

    Before the start of the Olympic Games, runners carry lighted torch(火炬) through many nations towards the stadium（体育场 ）where the games will be held. These sportsmen are from different countries. Yet they work together to carry the Olympic torch. It is passed from runner to runner,  When the last runner enters the stadium, he or she places the torch in a special basin filled with oil. It catches fire. It is then, only then, that the Olympic Games can begin.

    The Olympic flame（火焰）burns throughout the games. It is the flame of peace.

阅读下列一段文字，回答问题
1840年至1901年的六十余年间，中国屡遭西方列强欺凌，被迫签订了一系列不平等条约，清政府完全成为帝国主义统治中国的工具，中国逐步沦为半殖民地半封建国家，中华民族陷入苦难深重和极度屈辱的深渊。
（1）19世纪40年代到20世纪初，西方列强对中国发动过那些主要侵略战争？指出它们对中国近代社会造成的最主要的影响。
（2）在侵略者的炮口的震撼下，清王朝被迫与列强签订了一系列不平等条约。其中，最能体现中国领土主权开始遭受破坏，有利于帝国主义对中国资本输出，最终使清政府变成洋人的朝廷的分别是哪一条约的哪一条款？
（3）面对列强的侵略，中华民族进行了英勇抗争。请各写一例中国军民抗击侵略的史实。
（4）每一次侵略战争，清政府都签订了不平等条约。你得到什么样的认识。

今年3月15日，十二届全国人大五次会议表决通过了《中华人民共和国民法总则》。这表明法律（　　）