标注尺寸的基本要求（）。
A.正确
B.合理
C.完全
D.统一
E.清晰
参考答案：A, B, C, E
My father ______ my mother when they were both 26 years old, and they have ______ for 15 years.
A．married to; been married
B．married with; been married
C．was married; been married
D．married; been married
下列物质的电子式书写不正确的是
