A. 品位 B. 职位 C. 身份 D. 级别
A. 10~14mm B. 15~25mm C. 8~12mm D. 25~30mm E. 11~13mm
A. Questions from 36 to 40 are based on the following passage:
A. 形状 B. 缺陷 C. 冶炼方式 D. 化学成份