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Previous researches on supporting EFL(English as a Foreign Language)reading showed that Kit Build concept mapping(KB-mapping)method has better efficiency than Scratch Build concept mapping(SB-mapping)method in recalling the comprehended information two weeks later.In this research,we set out to investigate the following research question "Why KB-mapping method has better efficiency than SB-mapping method in recalling the comprehended information two weeks later?".One of the common comprehension styles in the EFL reading comprehension tasks is the sentence-by-sentence,where learners understand the text by closely following each sentence in the text.Learners will be able to sentence-by-sentence answer the Comprehension Test(CT)just after the reading,but many investigations indicated that,this understanding could not be kept for a longer time as is the case in the Delayed CT(DCT).We have a hypothesis that "KB-mapping method promotes a learner to read not sentence-by-sentence,although SB-mapping method does not promote same as KB-mapping method".In order to proof this hypothesis,we conducted an experiment to compare the learners comprehension with KB-mapping and SB-mapping methods.During this experiment,we have monitored the performance of learners in terms of the size and the progress of building learners map.In doing so,we added new functions to our system to record the building process of every learner.The outcome of the experiment confirms our previous results regarding the efficiency of KB-mapping.Moreover,the analysis of the progress of map building gives a proof that KB-mapping method helps the learners to avoid the sentence-by-sentence comprehension style.But the SB-mapping method could not help the learners to escape from this style of comprehension.Based on these results,we will design adaptive support for reading comprehension in our future work.