读课文《黄鹤楼送别》，根据意思写出相应的词语

①指美味人人爱吃。比喻好的诗文受到人们的称赞和传诵。____

②形容十分留恋，舍不得分开。____

③许多色彩纷繁的鲜花，好像富丽多彩的锦缎。____

④美好的名声天下皆知。____

    The giraffe is the tallest modern land animal. It can be over 5. 5 meters tall. Its neck alone may be 1. 9 meters long. Yet the giraffe has only seven bones in its neck, the same number as in the humans'. Even a small bird has many more bones in its neck than a tall giraffe. Each bone in a giraffe's neck is very long, while the bones in a human's neck are short. That makes the difference. A female giraffe gives birth to one baby at a time. The baby, called a calf, is about 1. 9 meters tall at birth. By the age of eight it is full-grown. The giraffe eats mostly leaves. Because it has a long neck, it can reach the high leaves on the trees.

根据短文内容，选择正确答案。

一个圆环，外圆半径是6厘米，内圆半径是4厘米，圆环面积是____平方厘米。

根据汉语意思完成句子。