Rick and Mary are from America．Now they are working in Tianjin．They can speak a little Chinese．Every morning they get up very early．Then they go to work by car.·They are very busy．They have lunch at the factory．①After lunch they work again．They finish their work very late．  In the evening they take Chinese lessons(上汉语课)．They want to talk with Chinese people．They often say，“Chinese people are very friendly(友好的)．”②They like to stay in China and they like to work with Chinese people．

根据短文内容，完成下列题目。

根据课文填空

①《爱我中华》的词作者是____,这首歌表达了作者____的思想感情。

②《落花生》中父亲把苹果、石榴、桃子比喻成____,把花生比喻成____。

③学完《师恩难忘》这篇课文,我知道了田老师是一个____的人。

④《暮江吟》是____代诗人____的作品。诗人选取了从____到____这一段时间里的景物进行描写,前两句写的景物有____ ,后两句写的景物有____,歌颂了____。

如图，⊙O的外切正六边形ABCDEF的边长为2，则图中阴影部分的面积为____ ．