对金库检查时检查人员应出具哪些证件（）。
A、总行出具的查库介绍信
B、身份证
C、工作证
D、检查证
参考答案：A, B, C
The president of the World Bank says he has a passion for China, ______ he remembers starting as early as his childhood.
A．where
B．when
C．what
D．which
从税收效率角度看，下列税率形式作用最弱的是（）。
A.比例税率
B.累进税率
C.累退税率
D.边际税率
