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

发布时间：2020-08-16 07:08:37


129. The researcher collected information, studied it, did a lot of        and learnt from the experiences of farmers.
A. experiments
B. explanations
C. experiences
D. Tests

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A. experiments
B. explanations
C. experiences
D. Tests
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