A identification card is required when you purchase foreign money from the Bank of China.
A. valid
B. fruitful
C. beneficial
D. effective
网友回答
(答案→)A. valid
B. fruitful
C. beneficial
D. effective
解析:valid 有效的,fruitful 丰富的,beneficial 有利益的,effective有效的,起作用的。根据句意:当你从中国银行购买外币的时候,有效的身份证件是需要的。