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.

20世纪30年代，德、意、日三国建立法西斯专政的相同背景是（     ）

下列不能说明生物是适应环境的是    (    )

（Ⅰ）求圆M的方程；

（Ⅱ）若过点（﹣4，1）的直线l与圆M相切，求直线l的方程．

看一看，算一算，填一填：（每格100米）

邮递员叔叔向____走____米到政府办公楼，再向____走____米就到了学校。
邮递员叔叔从学校出发向____经过医院，再向____走____米就到了李大爷家。
邮递员叔叔到李大爷家一共要走____米。