“大美无言，草根有力。”从古至今，中华民族的传统美德常常通过平凡人不平凡的故事流传人间，彪炳史册。那些默默无闻的普通人，在生活中展现出来的善良、坚韧、信义、自强等朴实无华的“真善美”召唤着我们去追逐梦想。对此分析正确的是（    ）

①民族精神体现了中华传统美德的精华     ②善良、坚韧、信义、自强是传统美德，也是民族精神的具体表现

③民族精神自古就有，无需培育               ④民族精神具有生生不息、历久弥新的特点

根据材料内容，选择正确答案。

    Mr. Brown is an old man. Every morning he goes for a walk in the park. And he comes home at twelve thirty for his lunch in the middle of the day.

But today a car stopped at his house at twelve 0'clock. Two policemen helped him get out. One of them said to Mr. Brown's daughter, "He can't find his way home in the park and ask us to take him home in the car."

    The daughter thanked the policemen and they leave. Then she asked her father, "Dad, you go to the park every day. But today you can't find the way. What's wrong?" The old man smiled like a child and said, "I can find my way home. But I don't want to walk home."

人体运动系统中，参与完成一个动作的结构是                           （  ）

十多年前，正是下图中的那双充满对知识渴望的大眼睛震撼了无数人的心，也让更多的人参与到一项活动中来，这项活动是（   ）