He got up late and hurried to his office, _________the breakfast untouched.

A．left

B．to leave

C．leaving

D．having left

关于老年躁狂发作特点的描述，正确的是（）

A.常呈典型的躁狂发作特点

B.常呈典型的轻躁狂发作特点

C.常表现为谵妄性躁狂

D.常伴有精神病性症状

E.症状常不典型，表现为易激惹、狂妄自大、言语增多并且哕唆