当别人问你长颈鹿有什么特征时，你应该怎样说？

    I like school days. I can learn many things from school. We have four classes in the morning and two in the afternoon. I like weekends, too. We don't go to school on Saturdays and Sundays. I often play ping-pong and play basketball on Saturday morning. I often play the violin (小提琴) on Saturday afternoon. I often do homework and play football on Sunday morning. I often go to the park on Sunday afternoon.

用计算器比较$\frac{\sqrt{5}-1}{2}$与$\sqrt[3]{0.23}$大小．

解：$\frac{\sqrt{5}-1}{2}$按键：

显示：____ ；

$\sqrt[3]{0.23}$按键：

显示：____ ；

所以$\frac{\sqrt{5}-1}{2}$　____ 　$\sqrt[3]{0.23}$（ 填“＞”或“＜”）

世界海洋和陆地的比例是（     ）