28．China won Olympic gold in the women's short track 3,000 metres relay on Wednesday, with Canada ____ the silver．

A．picking up

B．taking up

C．looking up

D．bringing up

患儿，9岁。罹患心肌炎2周，寒热起伏，胸闷憋气，心悸气短，肌肉酸痛，腹痛腹泻，倦怠乏力，恶心欲吐，舌质红，苔黄腻，脉濡数。其病机是（）

A.风热犯心

B.湿热侵心

C.气阴亏虚

D.心阳虚弱

E.痰瘀阻络