_______ he was only twelve, he could run faster than any kids in the school.[ ]

A. Though

B. Because

C. If

患者对亲人漠不关心患者对周围发生时事漠不关心、无动于衷，面部表情呆板，内心体验贫乏。（）

A.情感淡漠

B.抑郁状态

C.痴呆状态

D.脑衰弱综合征

E.缄默状态