Under the environment of fierce competition, the only way John could imagine ________ stress   

was to get tougher by making greater efforts. [ ]

A. handling                    

B. to handle                  

C. handled            

D. having handled

颅中窝骨折

A．鼻流血
B．双眼睑皮下青紫，逐渐加重
C．乳突下或咽后壁黏膜下瘀血
D．脑脊液耳漏
E．颞部头皮肿胀瘀血