The Great Wall has such great that thousands of tourists come to visit it every day.
某人向正东方向走xkm后,向右转150°,然后朝新方向走3km,结果他离出发点恰好是3km,那么x的值为( )
小花猫那两只圆圆的眼睛像绿宝石一般明亮。
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