牛的细微差别
发表于 2025-3-25 05:21:59
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sleep-spindles
发表于 2025-3-25 08:44:26
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cloture
发表于 2025-3-25 15:02:55
The Social Origins of Pre-fraction Knowledge in Three Year Olds, and systematic item-to-recipient sequence of actions which guarantees each recipient has an equal quantity. Children of age four also have a spectrum of ideas about the fraction one half (Hunting & Davis, Ch. 3 this vol.).
CLASH
发表于 2025-3-25 19:40:27
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包庇
发表于 2025-3-25 20:09:50
Sharing by Dealing as Problem Solving,method which, to an adult observer, would clearly work, and moreover was something that most of the children had demonstrated they could do. The most common strategy, adopted by approximately 11% of the children in the study, involved an estimation or guess, at one-third of a discrete pile of objects.
肉身
发表于 2025-3-26 02:42:53
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品尝你的人
发表于 2025-3-26 07:17:40
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情爱
发表于 2025-3-26 08:40:15
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Infect
发表于 2025-3-26 13:35:56
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NAG
发表于 2025-3-26 19:58:21
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