听力原文:M1: Hello.
M2: Tom, this is Steve.
M1: Steve, wow. It's great to hear from you. How are you doing, cousin?
M2: Great, and I promise I'll make this quick, because I know you're probably beading out to the hospital, right?
M1: Hey, I've got all the time in the world. Ten minutes. Besides, I'm waiting for my frozen dinner to cook, so tell me, what's up?
M2: Well, dad tells me you two had a long talk on the subject of my future.
M1: Right, and you are thinking about becoming a doctor, aren't you? I didn't know you had such good sense.
M2: Tom, I don't know where dad got this "surgeon" idea. Because I haven't really decided what I want to do... what I want to be... you know? I mean, I'm not really sure right now that I even want to be a doctor.
M1: Aha.
M2: I mean, I'm interested, but I'm interested in a lot of other things too.
M1: Like photography, for instance.
M2: Yeah, exactly. You know all about that?
M1: Sure I do. I don't think I can remember ever seeing you without a camera slung around your neck.
M2: It's getting worse. This year I'm taking practically all the pictures for the school yearbook. I've built my own dark room, and I'm up to my armpits in negatives.
M1: Terrific! And that just goes to prove what I was telling your dad. It's early yet to decide what you're going to do with your life. After all, you are only.., seventeen years old and I think when you enter the college, you may choose some courses like geography, biology and other courses like art, music... [fade out]
What's the relationship between Tom and Steve?
A.Uncle and nephew.
B.Cousins.
C.Brothers.
D.Close friends.
第1题
对放射敏感性的理解,哪项是正确的
A、放射敏感性是指某一肿瘤能否被彻底治愈
B、放射敏感性越高的肿瘤,治疗效果越好
C、放射敏感性的主要影响因素包括:细胞的固有敏感性、乏氧细胞的比例以及放射损伤的修复
D、放射敏感性低的肿瘤放射治疗无效
E、以上说法都不对
第2题
对放射敏感性的理解,正确的是()。
A、放射敏感性低的肿瘤放射治疗无效
B、放射敏感性是指某一肿瘤能否被彻底治愈
C、放射敏感性的主要影响因素包括:细胞的固有敏感性、乏氧细胞的比例以及放射损伤的修复
D、放射敏感性越高的肿瘤,治疗效果越好
E、以上说法都不对
第3题
A、肿瘤的放射敏感性取决于它的组织来源、分化程度、肿瘤的大体类型及病人的一般情况。
B、肿瘤的放射敏感性高,治愈性就大。
C、放射敏感性是指放射效应。
D、放射敏感性与肿瘤的固有敏感性、与是否乏氧、乏氧细胞的比例及肿瘤损伤后的修复有关。
E、有较大繁殖能力,较长期分裂,形态和功能尚未固定的细胞对放射更敏感。
第4题
氧合状况与放射敏感性的关系
A、氧合好的肿瘤细胞放射敏感性低
B、乏氧的肿瘤细胞放射敏感性高
C、乏氧的肿瘤细胞放射敏感性低
D、氧合状况与放射敏感性没有关系
E、以上说法都不对
第5题
氧合状况与放射敏感性的关系()。
A、氧合状况与放射敏感性没有关系
B、氧合好的肿瘤细胞放射敏感性低
C、乏氧的肿瘤细胞放射敏感性低
D、乏氧的肿瘤细胞放射敏感性高
E、以上说法都不对
第6题
A.两者没有一定的相关性
B.放射敏感性高放射治愈性就高
C.放射敏感性高放射治愈性就低
D.放射抗拒,放射治愈性高
E.放射敏感性中等,放射治愈性低
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