题目内容

2000多年前，中国人发明了它。It was ____ by Chinese 2,000 years ago.

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古代的指南针像一把汤勺。The zhinan zhen looked like a .

把它放在平滑的盘子上，当它的静止的时候，勺柄就会指向南方。When the spoon was put on a plate, its ____e could point to the south.

后来中国人用小小的钢针代替了汤勺。Then Chinese used a little to the spoon.

600多年前，郑和先后七下西洋，最远到达非洲东岸，红海，便是依靠指南针导航。600 years ago, Zheng He, a famous eunuch of the Ming Dynasty, traveled to Southeast Asia and the Indian Ocean seven times, Zheng even ____ the Red Sea with the help of the zhi nan zhen.