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The two most popular explanations of origin are that the belief goes back to pagan times when we believed in tree spirits, or that we are invoking Christ’s protection by referring to the wood of the Cross. The former is nothing but guesswork, based on the conviction that all superstitions must be ancient, and it has the usual problem of spanning thousands of years with no evidence at all of its existence, or, for that matter, any evidence that ‘we’ ever believed in tree spirits.
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efforts in business computing to date.
1983 to 1988, making up almost a decade of IBM's efforts and very few sales.
（十三）剪接、删改、损毁、丢失办理治安案件的同步录音录像资料的；