国产钢丝常用的标准直径范围为( )。
A．6.2～83mm
B．9.2～83mm
C．6.2～63mm
D．8～80mm
参考答案：A
My father will have a _ holiday. He'll take me to Qingdao. [ ]
A. ten days
B. ten day's
C. ten days'
