The young player had his leg______ in the    football game.   [ ]

A. injure        

B.  injured    

C. wound                

D. wounded

镜检法测定固定污染源排气中石棉尘时，一条纤维完全在计数视场（不论其是否与其他尘粒接触）内时计为一根，若只有一端在计数视场内，则不计数。