【公开课】Excel基础大全（1-66集）【超高清版】

1. He said that before the industrial era, nobody slept 8 hours in one block. People slept in two parts: they went to bed after sunset, woke up around midnight, stayed awake for 1–2 hours, then went back to sleep. This “split sleep” was normal for thousands of years. But when factories appeared in the 19th century, society forced everyone into one long sleep window — and the body never fully adapted. He said the modern schedule confuses the brain: it doesn’t understand when it should rest and wh

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A fire in Hong Kong has killed 55 people so far, and reports say 279 people are still missing. The fire broke out in the Tai Po neighborhood and has engulfed at least seven high-rise buildings. One of the buildings, a public housing complex, has accounted for 55 deaths so far, with more residents still unaccounted for. Authorities believe the fire may have started on bamboo scaffolding that had been set up for repair work. At the moment, three construction company executives have been arrested o

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