下列储蓄会计核算基本原则中正确的有（）。
A.双人临柜，钱帐分管
B.存款先记帐，后收款
C.付款先付款，后记账
D.扎对平衡，按月结账
参考答案：A
根据所给首字母，填写单词，补充完整句子。
1. She was d_______, so she can't hear.
2. This book is about space t_______. It's very interesting.
3. — When did you a_______ in Beijing?
— I got there yesterday.
4. The students are s_______ English words in the class now.
5. Daming is going to have a birthday p_______ in his home tomorrow.
逆向路径转发的优点是：
