30．He added, "President Obama is going to do_____ he thinks is necessary to get our economy moving again."

A．everything what

B．no matter what

C．whichever

D．whatever

下列哪些是病毒性心肌炎的临床诊断依据()

A．心功能不全或心脑综合征

B．心脏扩大，有奔马律或心包摩擦音

C．心电图示心律失常或明显ST-T段改变

D．CK-MB升高或心肌肌钙蛋白(cTnI或cTnT)阳性

E．心源性休克