问题
单项选择题
下述肿瘤中，不属于原发性恶性骨肿瘤的是（）。
A.脊索瘤
B.骨纤维肉瘤
C.成软骨细胞瘤
D.骨髓瘤
E.尤文瘤
答案
参考答案：C
解析：成软骨细胞瘤常发生于长管状骨的骨骺部位和骨骺突起部位，是一种良性肿瘤。
搜题请搜索小程序“爱下问搜题”
下述肿瘤中，不属于原发性恶性骨肿瘤的是（）。
A.脊索瘤
B.骨纤维肉瘤
C.成软骨细胞瘤
D.骨髓瘤
E.尤文瘤
参考答案：C
解析：成软骨细胞瘤常发生于长管状骨的骨骺部位和骨骺突起部位，是一种良性肿瘤。
Richard’s father died when he was five. Later on he 36 his mother. The poor boy had to 37 on his own, so he went to work for a rich farmer, who paid him nothing except food and clothes. An old woman felt 38 for him and often helped him. The boy wanted to go to (the) 39 very much, but he had no money. But he 40 lost heart and found some old books near the school and 41 himself to read and write. There was a narrow 42 between two mountains which connected the village and the town. One morning people 43 there was a big stone on the path. It brought them 44 : they had to move it away, or they had to cross the mountains to the town. 45 the stone weighed thirty tons at least and even the strongest young man couldn’t move it. They 46 for a long time, but nobody knew what to do. Richard looked at it carefully for a while and said, “I have a 47 to move it away.” But 48 men believed him. Some villagers even 49 him. The night 50 and people went back. Only the boy stayed there. To their surprise, the villagers found the stone was 51 the next morning. They didn’t 52 who had moved it away. The old woman said Richard had done it all by himself. “How could he?” the rich farmer called out, “He’s 53 fifteen! He couldn’t move it at all!” “He 54 a big hole beside the stone.” said the old woman, “and then he could 55 push it into the hole!” Looking at each other, the villagers couldn’t say a word.
|