收集材料的方法有很多,但总的原则是收集的材料应(  )。

收集材料的方法有很多,但总的原则是收集的材料应(  )。 A.正确 B.一手 C.新颖 D.真实 E.具有一定数量

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当教室中一片喧哗声时,教师突然放低声音或停止说话,会引起幼儿的注意,这是(  )。

当教室中一片喧哗声时,教师突然放低声音或停止说话,会引起幼儿的注意,这是(  )。A.刺激物的物理特性引起幼儿的无意注意 B.与幼儿的需要关系密切的刺激物,引起

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Such a blood pressure is ______ (正常的) for a person of his a

Such a blood pressure is ______ (正常的) for a person of his age.

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What does the author want to tell the readers through the st

What does the author want to tell the readers through the story?A.Giving sometim

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Which of the following did Gordon do according to Paragraph

Which of the following did Gordon do according to Paragraph 2?A.He helped the gi

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