(____) Ottawa is the capital city of Canada.
(____) The CN Tower is very tall.
(____) It has five yellow stars.
(____) They speak English and French.
(____) I live in China.
We are sure ________ the football match.
如图,在▱ABCD中,AB=3,BC=5,AC的垂直平分线交AD于E,则△CDE的周长是( )