What I found is that written evidence for knocking on wood (and for the history of gesture as a whole) is remarkably sparse. In the Penguin Guide to Superstitions, folklorist Steve Roud offers a skeptical take on the provenance of knocking on wood due to the near total absence of written records about it:
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。爱思助手下载最新版本是该领域的重要参考
Израиль нанес удар по Ирану09:28
对于各级领导班子和广大党员干部而言，关键是把思想方法搞对头，把自身置于大局中考量，把实际情况摸清楚，因地制宜、科学决策，走出一条适合本地区本部门实际的高质量发展之路。
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