To be appropriately deleted. Wisdom learning network answer card production of multiple-choice questions have a fixed standard, can not exceed the maximum number of more than the maximum number of need to reduce appropriately to meet the standard can be, Wisdom Learning Network is the KU Xunfei for the school's daily homework, exams and developmental teaching and learning evaluation needs to launch a big data personalized teaching system, designed to provide users with a more simple and easy to use system operation and comprehensive and perfect resource services.