下列有关肝豆状核变性疾病的表述哪项是不正确的（）
A.精神症状
B.常染色体隐性遗传
C.铁代谢障碍
D.有角膜K-F环
E.有锥体外系症状
参考答案：C
As high school students, it’s very important to keep ourselves ______ of what’s happening home and abroad every day.
A．to inform
B．informing
C．informed
D．be informed
计算哪种钢筋时，能用上梯板厚度？
