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许多人说:“人为万物之灵。”人,确有灵的一面。人能爬上月球,还将飞向火星以及其它星球。与人同为灵长类的猴子就爬不上去。可是,人也确有不灵的一面:长期生活在地球上的人类竟然一直不知道“地”是“球”形的。这“长期”有多长呢?众所周知,人类大约有二三百万年的历史,而人类不知道地球是球的历史,就有二三万万年。这是怎么回事呢?因为肯定球的历史不过几百年。几百年,相对于二三百万年的人类史来说,只有过是可以略而不计的一秒钟。曾有人认为地球是平板、是方形棋枰、是圆盘,后来又
Many say: “Man is the Spirit of all things.” Man, indeed, has a spiritual side. People can climb the moon and fly to Mars and other planets. Monkeys, like primate ones, can not climb. However, people also do have a weaker side: people living on earth for so long have never been aware that “earth” is “ball-shaped.” How long is this “long-term”? As we all know, mankind has a history of about two or three million years. However, mankind does not know that the Earth is the history of the ball, there are two or three million years. What is going on? Because the history of the ball is certain, however, for hundreds of years. Hundreds of years, compared with 23 million years of human history, only a second can be negligible. Some people think that the earth is flat, is a square chessboard, is a disc, and later again