129. The researcher collected information, studied it, did a lot of and learnt from the experiences

题目简介

129. The researcher collected information, studied it, did a lot of and learnt from the experiences

题目详情


129. The researcher collected information, studied it, did a lot of        and learnt from the experiences of farmers.
A.experimentsB.explanationsC.experiencesD.Tests
题型:单选题难度:偏易来源:不详

答案

 A

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