279. The Palace Museum has many art treasures. In this sentence, "treasure" means ____.

A．precious things

B．money

C．cheap things

D．unimportant things

2岁幼儿，头颈向左偏转，四肢强直，继而出现四肢屈曲性抽动，其发作类型为（）

A.局灶性运动性发作

B.局灶性感觉性发作

C.强直-阵挛发作

D.痉挛发作

E.失神发作