软骨肉瘤的主要治疗方式为（）。
A.术前放疗+手术
B.术前化疗+手术+术后化疗
C.手术+术后化疗
D.手术
E.放疗
参考答案：D
解析：联合化疗在恶性骨肿瘤综合治疗中的地位目前已得到广泛的公认。骨肉瘤和尤文肉瘤治疗原则相似，术前进行薪辅助化疗，目的是提高全身控制率和保存肢体，使手术容易进行。术后标本进行病理组织学观察，根据化疗后组织坏死程度分为四级：Ⅰ级，几乎没有肿瘤坏死；Ⅱ级，肿瘤坏死率＜90%；Ⅲ级，肿瘤坏死率＞90%；Ⅳ级，肿瘤全部坏死，未见活的肿瘤细胞。参考坏死程度选择术后化疗方案，Ⅰ、Ⅱ级沿用术前化疗方案，Ⅲ、Ⅳ级更改方案。术前化疗周期数2～6个，术后2～4周期。软骨肉瘤对化疗不敏感，治疗以手术治疗为主，切缘阳性者还要考虑术后放疗。
阅读下面短文，掌握其大意，然后从36-45各题所给的A、B、C、D四个选项中，选出一个最佳答案。 I don’t think there is any one being as interested in food as I. We lived on a farm in Lincolnshire and had a good 36 . She made fantastic English food; her roast beef was out of this world. I used to love going down to the 37 _ and watching her work, and I learned a lot from her. I realized that I wanted to be a cook when I was about 12. When other boys __ 38 to do sports after school, I helped with cooking at home. By the time I was 15, I had _39 to be a cook. However, I knew my parents wouldn’t allow me to be a cook. I had to tell them about it 40. I told them that I wanted to do a cookery course for fun, and stayed for a month in a hotel in Torquay. I enjoyed it so much that I couldn’t put off telling my parents any longer, 41 I brought the subject up one night over dinner. 42 there was silence, and then my father asked me why. I explained that cooking was 43 painting a picture or writing a book. Every meal was a work of creation. I could see that my father disagreed, but he was not 44 . He just looked at me and smiled. My mother kissed me. And now I have my own restaurant, and it goes well. I can see they are 45 me. However, my grandfather thinks I’m mad to give up farming.
|