磨边的位置要恰好是涂胶的位置，这个位置应在粘口上离折痕线（）处。
A.1～2mm
B.2～3mm
C.3～4mm
D.4～5mm
参考答案：A
Alice interviewed some people and asked them about ____ on Father' s Day .
A. what they do B. what they did. C. what they will do .
