点M的柱坐标为$\left(2,\frac{\pi }{3},8\right)$  ，则它的直角坐标为____

根据课文内容选词填空。

             thick      soft        hot         hear       blind      elephant        hard

    It is a____ day. Four men are under a tree. They are all ____ . They cannot see. Then they ____  a noise. Oh, it's an____ . They touch the elephant. One touches its ear, he thinks the elephant is____ . One touches its tooth, he thinks it's ____ . One touches its tail, he thinks it's thin. One touches its leg, he thinks it's ____ . How funny!

摩洛哥人依宾拔都他，于元至正七年（1347年）来华，对一座城市作了这样的记述：“渡大洋后，所至第一城，即刺桐也……刺桐港为世界上各大港之一，由余观之，即渭之世界最大之港，亦不虚也。”文中的“刺桐”是指

下列图形中,既是中心对称图形,又是轴对称图形的是(     )