Application of Convolutional Neural Network-Based Hierarchical Teaching Method in College English Teaching and Examination Reform

Table 1

Written test tiered model.

Levels	Exam type	Form	Difficulty	Proportion (%)
1	Compulsory questions	Single-choice, connected, completion, and reading comprehension questions	Easy	60
2	Optional questions	Correction and judgment questions	Difficult	20
3	Fun questions	Variety of formats, flexible and variable	Hard	20