病历摘要：男性患者60岁突然在住院部一楼的大厅晕倒，一名麻醉医生刚好遇见。

老年男性突然晕倒为判明情况，正确的首要步骤是（）。

A.检查有无颈动脉搏动

B.捶击心前区

C.口对口人工呼吸

D.胸外心脏按压

E.寻找帮助

_____ Lisa _____ Lucy may go with you because one of them must stay at home to take care of the dog. [ ]

A. Not only---but also

B. Neither---nor

C. Both---and

D. Either---or