原题
Child development milestones are key indicators of a child's growth. They enco various asp of development, incl language acqui, motor ski, and soc interactions. O example i taking a fi step, wh typically occurs around the age of twelve months. These milestones are useful in helping parents and caretakers monitor a child's progress. It is important to remember, however, that these milestones only provide a general guide, and each child develops at their own pace.
参考答案：mpass ects uding sition lls ial ne s rst ich
解题思路
老师暂未填写解题思路。