预留密码的（）账户可在全国范围内通存通取。(五级、四级)
A、活期
B、整存整取
C、定活两便
D、通知存
参考答案：A
用0，1，2，3，4，5这六个数字可以组成______个无重复数字且小于1000的正整数．
Some retired people have nothing to do. They often get together and ___for hours talking about their past experiences.
A．look around
B．get around
C．turn around
D．sit around
