下列供观赏的植物中,属于营养器官的是( )
A:北京香山的红叶
B:山东菏泽的牡丹花
C:南京梅图的梅花
D:云南大理的茶花
如图是一个古代车轮的碎片,小明为求其外圆半径,连接外圆上的两点A、B,并使AB与车轮内圆相切于点D,半径为OC⊥AB交外圆于点C.测得CD=10cm,AB=60cm,则这个车轮的外圆半径是 ____.
根据意思写出的词语,错误的一项是( )
When he arrived at the airport, Lee Minho found that ________ fans were waiting for him there.