题目是判断YES/NO/NOT GIVEN.
题目是Stirn's "America" camera lacked Kodak's developing service.
原文中是“The real significance of the first Kodak camera was that it was backed up by a developing and printing service”.
意思不就是这种相机得到了developing service的支持（back up）
题目中的Lack意思是说相机缺少developing service的支持,所以题目应该是NO.
可是答案却不是,难道我的理解是错的吗?
还是说Lack在这里的意思表示”需要“?但是lack不也有”缺少“的意思啊?