纵隔肿瘤中,见不到钙化的是()
A.畸胎类肿瘤
B.胸腺瘤
C.心包囊肿
D.神经源性肿瘤
E.支气管囊肿
参考答案:C, E
The poor boy _____ blind at the age of three.
A.turned
B.went
C.became
D.looked