实验法的特点有
A.必须在实验室进行
B.人为设定观察情境
C.直接建立研究结论
D.实验结果受实验人员和实验对象的主观影响
E.其研究结论可直接谁论到真实的生活中
正确答案是BCD
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The following passage is incomplete with one body paragraph missing. Study the passage carefully and write the missing paragraph in about 100 words. Make sure that your tone and diction are in unity with the passage provided.
下一篇:《樊川集》