When a customer withdraws money from the bank, it is required to leave his signature. But how can we be sure it is ?
A. absolute
B. alternative
C. academic
D. authentic
网友回答
A. absolute
B. alternative
C. academic
(答案→)D. authentic
解析：考查形容词：A. absolute绝对的，B. alternative可替代deep，C. academic 学术的，D. authentic真实的，可信的，句意：当顾客从银行提取钱的时候，要求留下签名，但是我们怎么确保这是真实的。选D。