The        look on his face suggested that he         that.    [ ]

A. puzzling ; hasn't expected    

B. puzzled ; hadn't expected    

C. puzzling ; doesn't expect    

D. puzzled ; didn't expect

关于巩膜的说法正确的是：

A．巩膜的厚度并不一致，一般女性较男性薄．

B．沿视神经巩膜的外2/3的组织向后合并到视神经硬脑膜鞘中．

C．巩膜筛板是巩膜的内2/3向巩膜后孔的中央外展，形成薄板，被视神经穿出．

D．巩膜筛板是眼球纤维层中最薄弱的部分．

E．球内恶性黑色素瘤常沿巩膜的睫状血管出口处侵及球外．