用户自提产品时，非钢铁产品不用开成品携出证（出厂票）。
参考答案：错
根据句意及首字母提示填写单词。
1. These are the b________ of the new building.
2. Your voice is i_________ to hers.
3. Your poem is very good e________ for some spelling mistakes.
4. We call identical twins c________.
5. Lily and Lucy are t_______. They were born of the same mother at the same time.
