All theories______from practice and in turn serve practice.A、originateB、restrai

游客2025-04-06 19

问题 All theories______from practice and in turn serve practice.

选项 A、originate
B、restrain
C、modify
D、reflect

答案 A

解析 (originate发源，来自)。句意为：所有的理论来源于实践，反过来为实践服务。B．restrain抑制；C．modify修改，缓和；D．reflect反射，反映。

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Alltheories______frompracticeandinturnservepractice.A、originateB、restrai