题目内容：
从动物心理发展到人的意识的决定性环节是（ ）
A．手脚分工 B．直立行走
C．语言的出现
D．劳动实践
参考答案：
答案解析：
单选题：从动物心理发展到人的意识的决定性环节是（ ）
- 题目分类：马克思主义基本原理概论
- 题目类型：单选题
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B．直立行走
C．语言的出现
D．劳动实践
B．直立行走
C．语言的出现
D．劳动实践
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Paragraph 5______
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请在第 ____ 处填上正确答案。
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