题型:问答题 男性病人,28岁。6个月前曾扭伤右膝关节,之后右膝关节内侧疼痛,肿胀逐渐加重,外院摄X片见:右胫骨上端内侧有5cm×5cm大小透光区,中间有肥皂泡沫阴影,骨端膨大。近2个月来肿胀明显,夜间疼痛,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,呈现云雾状阴影,骨皮质被肿瘤组织穿破,侵入软组织。该病人最可能的诊断是()A.骨肉瘤B.骨软骨瘤恶变C.骨纤维瘤恶变D.骨囊肿恶变E.骨巨细胞瘤恶变 查看答案
题型:问答题 Space exploration has been made ______ with the development of modern science and technology.A.it possibleB.it was possibleC.that possibleD.possible 查看答案