下列哪项与癔症的特点不符

A．首发年龄以20～30岁最多

B．有心理社会因素作为诱因

C．分离性障碍需与癫痫大发作相鉴别

D．预后较好

E．可服用抗焦虑药治疗

Without the friction between their feet and the ground, people would () be able to walk.

A. in no time

B. by all means

C. in no way

D. on any account