My mother never has noodles breakfast.
A:at
B:on
C:in
D:for
某小组在做“探究水的沸腾”实验时,实验装置如图甲所示.
读图,完成下列要求.
如图,在△ABC中,∠B=30°,ED垂直平分BC,ED=5.则CE的长为( )