Linda is _______ her mother in many ways. For example, they are both tall and thin.
A:similar to
B:kind to
C:friendly to
D:different from
①应重视对儿童消费特点和心理的研究
②应重视培养儿童勤俭节约的消费观念
③应引导儿童的消费观念,倡导适度消费
④应制作儿童能够接受的产品创意广告
如图,AB是⊙O的弦,BC切⊙O于点B,AD⊥BC,垂足为D,OA是⊙O的半径,且OA=3.
下列化学方程式能正确表示所述内容的是 ( )