In advanced investigation, we deduced that: DGS can provide plentiful perpetual experience, thus contribute to master cognitive ability, which can form special cognitive strategies.

• 在进一步的分析中我们认为，产生该结论的主要原因是：DGS技术提供丰富的感性经验，促进认知技能的把握，给学生具备某种认知策略创造了条件；