我国钢轨的标准长度有6m、12.5m和25.0m三种。
参考答案：错
在“然本作士人，以医见业，意常自悔”中，“见”之义为（）
A.立
B.现
C.看
D.视
— ______.
— He is a shop assistant. [ ]
A. Who is the man?
B. Where is your father?
C. What does your father do?
D. Is your father a shop assistant?
