Objective: to study the variations of parenting practices during children from 2 to 7 year-old and its relation to childrens inhibition.
目的：考察父母教养行为在儿童2岁和7岁时的差异及其与儿童抑制性的关系。
Methods 612 children aged 6~7-year-old from 2 schools were assigned to a fluoride foam group, a fluoride gel and a control group.
方法将武汉市两所小学612名6～ 7岁儿童分为氟化泡沫组、氟化凝胶组和对照组，每6个月分别使用一次氟化泡沫和氟化凝胶，为期2年。
Thee oldest, 7-year-old DeMond Tunstall, was found in the dryer and the younger two children - 2-year-old Ivan Tunstall-Collins and 1-year-old Jinela Tunstall - in the washer.
最大的孩子德蒙·汤斯顿，7岁，他的尸体是在干燥机里发现的；年龄稍小的两个孩子分别是两岁的伊万·汤斯顿·柯林斯和1岁的杰里拉·汤斯顿，他们的尸体是在洗衣机里发现的。
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