题目

Once a circle missed a wedge（楔子）. The circle wanted to be  76  , so it went around looking for its missing piece. It was uncompleted and therefore could roll only very slowly. While rolling, it admired the flowers along the way,  77   (chat) with worms and enjoyed the sunshine.     One day the circle found a piece that  78  perfectly. It was so happy. Now it could be whole with nothing missing. It fixed the missing piece in itself and began to  79  . Now that it was a perfect circle, it could roll very fast, too fast to notice the flowers or talk to   80   . When正值清明时节，中国驻朝鲜大使李进军4月4日上午率领使馆馆员来到平壤友谊塔祭奠中国人民志愿军烈士。当年，中国人民志愿军“雄赳赳，气昂昂，跨过鸭绿江”，唱出的时代主旋律是（　　）A. 抗美援朝，保家卫国 B. 转战陕北，斗智斗勇C. 决战平津，瓮中捉鳖 D. 渡江战役，一往无前