银行卡书面挂失可在任意网点办理，书面挂失状态下，可以做密码挂失。（）
参考答案：错
解析：书面挂失时需要验证密码，密码挂失时需要验证凭证。
In the past few years there ______ great changes in my hometown. [ ]
A. have been
B. were
C. had been
D. are
简述仿形加工的优缺点？
