撤销书面挂失须持卡人本人凭（）办理。
A.银行卡
B.有效身份证件
C.密码
参考答案：A, B, C
简述麦汁冷却的目的和要求？
—You have made great progress recently.
—______.
A．So has Ann
B．So Ann has
C．So she does
D．So does she
