听力原文:M: Did you take these pictures? They are very good.
W: Yes, I think they turned out very well too. I like to bring my camera with me wherever I go. That way if I see something attractive I can snap a picture of it.
M: Carrying a big camera around is too much trouble for me.
W: My camera is really small enough. Here let me show you.
M: That is a compact camera. But you must know a lot about photography to get such professional looking results.
W: Not necessarily. This camera is simple to work.
M: Does this model come with a flash attachment for indoor shots?
W: Better than that. It has a built-in electronic flash and an automatic focus too. I don't even have to worry about focusing.
M: That's what I need. When I take pictures, they usually come out blurry because I don't adjust the lenses properly. And I hate photos that are out of focus. Is a camera like yours very expensive?
W: Less than you'd expect. Why don't you check the prices that Headfields demonstrates? This model was on sale there last week.
M: I think I will. It certainly won't hurt to take a look.
As the conversation begins, what are the man and woman doing?
A.Looking at some photographs.
B.Selling cameras.
C.Teaching a photography class.
D.Repairing camera equipment.
第1题
超分割放射治疗不良反应,正确的是
A、早反应减轻
B、早反应和晚反应增加
C、晚反应减轻
D、无影响
E、以上都不对
第2题
超分割放射治疗不良反应,正确的是()。
A、无影响
B、早反应减轻
C、晚反应减轻
D、早反应和晚反应增加
E、以上都不对
第4题
A、最大限度地减轻晚反应组织的放射损伤
B、最大限度地减轻早反应组织的放射损伤
C、最大限度地杀灭肿瘤
D、最大限度地杀灭肿瘤乏氧细胞
E、最大限度地杀灭放射敏感的细胞
第6题
有关超分割放射治疗的描述,不正确的是()。
A、总剂量增加
B、延长总治疗时间
C、增加分次次数
D、降低分次剂量
E、晚反应减轻
第7题
有关超分割放射治疗的描述,错误的是
A、延长总治疗时间
B、降低分次剂量
C、增加分次次数
D、总剂量增加
E、晚反应减轻
第8题
关于早、晚反应组织,不正确的是()。
A、缩短总治疗时间,可以加重早反应组织损伤
B、早反应组织对分次剂量变化不敏感
C、用等效总剂量和分次剂量作图,早反应组织比晚反应组织陡
D、晚反应组织对总治疗时间变化不敏感
E、早反应组织α/β比值高,晚反应组织α/β比值低
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