【单选题】【消耗次数：1】
雷电是雷雨云之间或云地之间产生的放电现象。
①
正确
②
错误
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【简答题】
如何培养学前儿童记忆的持久性？
【简答题】
简述幼儿记忆发展的特点
【单选题】
学前儿童养成良好的用眼习惯，以下说法正确的是（ ）
①
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②
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③
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④
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【填空题】
最重要并常用的形态指标是（ ）和（ ）。<img class="questionIndex" data-index="1" src="/common/images/question_button/BlankSpace1.gif"/><img class="questionIndex" data-index="2" src="/common/images/question_button/BlankSpace2.gif"/>
【填空题】
（ ）规律：上肢最初只有无意识活动，然后学会大把抓，最后才学会用拇指和指拿细小的物体。<img class="questionIndex" data-index="1" src="/common/images/question_button/BlankSpace1.gif"/>
【填空题】
（ ）规律：先学会抬头、转头,然后能翻身、学会坐、站立，最后才会走、跑、跳等复杂动作。<img class="questionIndex" data-index="1" src="/common/images/question_button/BlankSpace1.gif"/>
【填空题】
幼儿骨的有机物含量较（ ），无机盐含量相对较（ ），所以幼儿骨的弹性大，柔韧性强，而硬度小，容易弯曲变形，不易骨折,一旦骨折，易发生（ ）现象。<img class="questionIndex" data-index="1" src="/common/images/question_button/BlankSpace1.gif"/><img class="questionIndex" data-index="2" src="/common/images/question_button/BlankSpace2.gif"/><img class="questionIndex" data-index="3" src="/common/images/question_button/BlankSpace3.gif"/>
【填空题】
大脑皮质活动的（ ）原则是指人们学习和和工作的效率与有关的大脑皮质是否处于优势兴奋状态有关。<img class="questionIndex" data-index="1" src="/common/images/question_button/BlankSpace1.gif"/>
【填空题】
幼年时期，甲状腺素分泌不足，将患（ ）。<img class="questionIndex" data-index="1" src="/common/images/question_button/BlankSpace1.gif"/>
【填空题】
在幼年时期，若生长素分泌不足，将患（ ），若分泌过多则患（ ）。<img class="questionIndex" data-index="1" src="/common/images/question_button/BlankSpace1.gif"/><img class="questionIndex" data-index="2" src="/common/images/question_button/BlankSpace2.gif"/>