如图,△ABC中,D,E两点分别在AB,AC边上,且DE∥BC,如果ADAB=23,AC=6,那么AE的长为( )
下列图形是中心对称图形的是( )
— He was chosen to be a volunteer of the Olympic Games.
— Great! No one speaks English _______ him.
A. reading B. postman C. university D. happy E. rabbit