退换货金额达到（）时，须经运营管理部经理签字认可。
A、2000元；
B、3000元；
C、4000元；
D、5000元。
参考答案：D
句型转换。
1. We like tomatoes.(改为一般疑问句)
_________ you ________ tomatoes?
2. Check your answers again.(改为否定句)
_______ ______ your answers again.
3. She leaves home at eight every day.(改为一般疑问句)
________ she ________ home at eight every day?
4. Can they go to the concert? (作否定回答)
________ ,________ ________ .
5. Lin Fei's home is about 10 kilometers away from school.(对划线部分提问)
________ ________ is Lin Fei's home from school?
金燕借记卡交易密码挂失和卡片正式挂失同时办理时，挂失期限必须时（）天。
A.5
B.6
C.7
D.8
