下列四项是已经测得的发芽率,最适宜播种的是( )
A:60%
B:90%
C:75%
D:94%
如图,在△ABC中,∠ACB=90°,∠A=30°,AB的垂直平分线分别交AB和AC于点D,E,AE=2,CE=( )
All the Chinese people must work hard _______ our China Dream.