关于尤文肉瘤的临床治疗，下列错误的是（）。
A.对放疗不敏感
B.主要采取综合性治疗
C.以手术治疗为主
D.因易早期转移，单独应用放疗或化疗的远期疗效差
E.根据患者情况和手术适应证，手术可采取保肢或截肢的方法
参考答案：A
解析：尤文肉瘤对放疗极为敏感，经小剂量照射后，能使肿瘤迅速缩小，局部疼痛明显减轻，但由于尤文肉瘤易早期转移，单独应用放疗远期疗效差。化疗也很有效，但预后仍较差。现采用放疗加化疗和手术（保肢或截肢）的综合治疗，生存率已提高到50%以上。
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| One summer in college, I was invited to be an instructor at a high school leadership camp. I first 1 a boy under the tree on the first day of camp. His obvious 2 and shyness made him appear weak and lonely. Nearby, 200 3 campers were playing and joking, but the boy seemed to want to be anywhere 4 where he was. I was instructed to care more about campers who might feel 5 . So I 6 him and said, "Hi, I'm Kevin. It's nice to meet you. How are you?" 7 a shaky voice he 8 answered, "Okay, I guess." I calmly asked him to join in the activities and 9 some new people. He quietly replied, "No, this is not really my thing." I could 10 that this whole experience was 11 to him. But I somehow knew it wouldn't be right to 12 him, either. It was going to take more time and 13 . The next day, I was leading camp songs for the campers. They eagerly participated. But the boy was just sitting alone, 14 out the window. That evening at our nightly staff meeting, I made my 50 about him known. I asked them to pay special attention and spend time with him 51 they could. The days flew by fast. When the "last dance" came, surprisingly, the boy from under the tree was now a shirtless dancing 52 . He owned the dance floor 53 meaningful time with others. I couldn't' believe it was him. In that instant, I realized how easy it is to give a bit of 54 every day. You may never know how much each gesture may mean to someone else. I tell this story as 55 as I can, and I advise others to look out for their own "boy under the tree." | ||||
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