早在3000多年以前，（）人就已经掌握了十分先进的铸造技术——（）
参考答案：苏美尔；“去蜡铸造法”
— Have you seen the movie Avatar?
— Yes, twice. It's ____ one I've seen. [ ]
A. interesting
B. more interesting
C. most interesting
D. the most interesting
______属于无鳞鱼。
A．墨鱼
B．鲨鱼
C．鲥鱼
D．黄鳝
