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.尤文肉瘤
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。
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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.尤文肉瘤
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。
| Read and choose the correct answer. 阅读短文，选择正确的答案。 |
| Mr. Li is our English teacher. His home is near our school. Sometimes we go to his home. He has two sons. They are only five years old. They look like their father. They often wear the same clothes. We love to see them and play with them. Mr. Li calls them Da Bao and Xiao Bao. |
| 1. Mr. Li is the father of . |
[ ] |
| A. the two girls B. the twins C. us and the two boys |
| 2. Mr. Li's home is . |
[ ] |
| A. in the school B. near our school C. far away from the school |
| 3. The twins are years old. |
[ ] |
| A. ten B. four C. five |
| 4. The twins often wear . |
[ ] |
| A. the same clothes B. the blue shirts C. the same shirts |
| 5. The twins often play with . |
[ ] |
| A. their students B. their sister C. Mr. Li's students |