A 3G mobile phone, _____ to be most useful and fashionable, is popular with some teenagers.[ ]

A. consider

B. considering

C. considered

D. to be considered

男性患者，26岁，2周前感冒，近日感胸闷，气急，心率100/min，第一心音减弱，血沉30mm/1h，乳酸脱氢酶及谷草转氨酶升高，心电图ST段下移及T波倒置，诊断最可能为

A．心绞痛
B．病毒性心肌炎
C．风湿热
D．急性心肌梗死
E．原发性心肌病