The solution to today's Connections #992 is...
The “Knocking on Wood” Wikipedia page mentions Roud’s conclusion, and this claim of a 19th century origin has circulated online as the final say on the matter. If you go back to the original, though, Roud’s proposal actually ends on an ambivalent note: “Before this theory [of 19th century origins] can be finally accepted, however, an examination of the history of European forms of this custom would be advisable.”
Израиль нанес удар по Ирану09:28，推荐阅读旺商聊官方下载获取更多信息
Author(s): Junwei Che, Xuezhi Wang
，更多细节参见heLLoword翻译官方下载
63-летняя Деми Мур вышла в свет с неожиданной стрижкой17:54，更多细节参见搜狗输入法2026
应对疫情等因素影响，要求“发挥好防止返贫监测帮扶机制预警响应作用”；