1. 研究目的与意义（文献综述包含参考文献）

effects of word concreteness and exercise types on efl vocabulary acquisition

词汇具体性和练习类型对英语学习者词汇习得

2. 研究的基本内容、问题解决措施及方案

3. method

3.1 research design

this study adopts a quantitative method to investigate how word concreteness and exercise types affected efl vocabulary acquisition and whether they interact with each other. word concreteness and exercise types are the independent variables and efl vocabulary acquisition is the dependent variable and measured in terms of receptive and productive vocabulary knowledge.