• 2022-06-08
    中国大学MOOC: (5)Crying can help people maintain health under certain conditions.
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      It can also help with mental health issues. Besides, exercise can give people a real sense of

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      Personalities are formed and developed through social practices under certain social and historical conditions.

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      中国大学MOOC: Both historical knowledge and contemporary events can help people shape their perspectives.

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      There are two kinds of phenomena in the objective world。 The first is the phenomenon that will happen under certain conditions, which is called inevitable phenomenon。 The second kind is the phenomenon that may or may not happen under certain conditions, which is called random phenomenon。 ( )

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      (4)、 [单选题] (2分) A: sound scientific theory should be one that _________.A、works not only under one set of conditions at one time, but also under the same conditions at other times. B: does not allow any changes even under different conditions. C: can be used for many purposes. D: leave no room for improvement.