如图,线段AB是圆O的直径,弦CD⊥AB,如果∠BOC=70°,那么∠BAD等于( )
A:20°
B:30°
C:35°
D:70°
著名的赵州桥建于( )
—Can you help me my cat while I am away?
—No problem. Just bring it to my house you leave.
下列不是与我国隔海相望的国家是( )