---Can you tell me whom the book ________ in April, 2012?

---Sorry, I don’t know.

A．was written by

B．was written

C．is written

D．is written by

女性，35岁，风湿性心脏病患者，疑为亚急性感染性心内膜炎，检测心脏瓣膜有无赘生物的最好方法是（）

A.X线检查

B.超声心动图

C.心电图

D.CT扫描

E.血培养