Another test involved counting backwards by sevens from 9, 095.
另一项测试中，被试要求从9095开始，逐一减7倒数。
When you are finished, return to alertness by counting backwards from 5 to 1.
上边完成后，从5倒数到1，让自己回到警觉状态。
Try counting backwards from 100 by 3's, or saying the alphabet backwards, etc.
试一试以3为间隔从100倒数数，或者，倒背字母表。
Try counting backwards from 100 by 3's, or saying the alphabet backwards, etc.
试一试以3为间隔从100倒数数，或者，倒背字母表。
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