2. 外语
  3. A theory is an organized set of principles that is designed to explain and predict some phenomenon. Good theories also provide s

A theory is an organized set of principles that is designed to explain and predict some phenomenon. Good theories also provide s

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问题 A theory is an organized set of principles that is designed to explain and predict some phenomenon. Good theories also provide specific testable predictions, or______, about the relation between two or more variables.
选项 A、hypothesis
B、conception
C、idea
D、meaning
答案A
解析 句子大意为：理论就是一套有组织的原理，旨在解释现象并预测现象。好的理论还提供具体的可经得起考验的关于两个或更多变量之间的关系的预测或假设。在给出的选项中：hypothesis“假设”；conception“概念”；idea“想法”；meaning“意义”。根据常识可知，科学理论的建构常常是以假设为出发点的。所以，正确答案是A。
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