As we know，there     1 four seasons in China . It's    2   in spring（春）, hot in   3    , cool in autumn(秋) and cold in    4   . My   5  season is winter. Sometimes it snows（下雪）. Everything is all white. The world    6   clean and fresh(新鲜). I can go skating then.
    But Kitty likes summer    7  than winter. She says summer is   8     for sports. She can go  9   ,  sometimes in a lake and sometimes in a river. She   10 it very much .

民族工业出现“短暂的春天”是在(    )

如图所示，利用弹簧测力计拉着物体在水平面上匀速向右直线运动，此弹簧测力计的量程是____牛．该物体受到的摩擦力为____牛。