可以用来当作商业银行二级准备的资产有（）。
A、在中央银行的存款
B、CD存单
C、同业拆借资金
D、国库券
E、定期存款
参考答案：B, D
— Has your father returned from Africa yet?
— Yes, but he _____ here for only three days before his company sent him to Australia. [ ]
A. was
B. has been
C. will be
D. would be
耕地占用税、契税、农业税、牧业税的征收管理，参照《税收征管法》的规定执行。
