3. 从认识到会用（作业）
1）老问题一直都存在，新问题也开始暴露出来。
Old problems remain, and new problems are beginning to emerge.
2）场景：填鸭式学习方式弊端开始出现。
造句：The problems with the cramming method, that is, trying to learn a lot of things in a short period of time are beginning to emerge.
