The boss exploded with anger and asked him to leave in no time;       ,he was fired

A．on the contrary

B．on the whole

C．in other words

D．in return

腰椎间盘突出症是指（　　）

A．托马斯征阳性

B．拾物试验阳性

C．直腿抬高试验和加强试验阳性

D．患部活动受限，好发于50岁左右

E．早期局部分层穿刺有助于诊断