The baby is only ten old.[ ]
A. month's
B. months
C. months'
D. month
答案：B
A terrible terrorist attack at the train station in Kunming, on March 1, 2014 29 death and more than 140 injuries.
A．occurred; caused
B．happened; caused
C．occurred; causing
D．happened; to cause
男，35岁。右膝关节内侧疼痛、肿胀半年，曾在外院摄X线片，见右胫骨上端内侧有一5cm×4cm大小透光区，中间有肥皂泡沫阴影，骨端膨大。近1个月来肿胀明显加重，夜间疼痛难忍，右膝关节活动受限。入院后X线摄片示胫骨上端病变扩大，肥皂泡沫阴影消失，呈云雾状阴影，病变侵入软组织。
该患者最可能的诊断是（）
A.骨肉瘤
B.骨软骨瘤恶变
C.骨囊肿
D.骨纤维肉瘤
E.骨巨细胞瘤恶变
