After the earthquake hit Japan, many international organizations offered _______.[ ]

A. to helping

B. to help

C. helping

患者男性，24岁，胸痛5天，伴低热、咳嗽、气促，体检心界明显扩大，心尖冲动位于心浊音界外2cm。心电图示窦性心动过速，低电压，广泛性T波低平，诊断考虑为（）

A.结核性心包炎

B.肺部感染

C.扩张型心肌病

D.急性心包炎伴积液

E.病毒性心肌炎