下列说法不正确的是( )
A．氢氧化铝药片可用于治疗人体胃酸过多
B．医疗上常用硫酸钡作X射线透视胃肠的“钡餐”
C．食用加碘盐可防治核辐射对人体的伤害
D．放射性同位素释放的射线可用于育种、治疗肿瘤
答案：C
题目分析：食用加碘盐可防治碘缺乏病，但不能防止核辐射对人体的伤害，选项C不正确，其余选项都是正确的，答案选C。
点评：该题是常识性知识的考查，难度不大。主要是考查学生对教材基础知识的熟悉掌握程度，以及灵活运用基础知识解决实际问题的能力，有利于调动学生的学习兴趣和学习积极性。也有利于引导学生树立正确的健康观。
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| Lofton (洛夫顿) is a little village not far from Manchester (曼彻斯特). Like many 1 villages near towns or cities, it is clean and quiet. Not many families 2 there, so the people all know 3 . Most of them are friendly and helpful. 4 their homes are in Lofton, many people have jobs in Manchester. Some work in the big factories. 5 work in shops or offices. Most of these people go to work by train. It usually takes them about 6 to get from Lofton to Manchester. In the evening a lot of people like 7 TV. If they want to see a film or to listen to a concert (音乐会) , they 8 go to Manchester. There are no cinemas in Lofton. Life in Lofton may not be so exciting as life in the 9 cities, but it can be just as 10 as there. That is why people in Lofton love their little village. | ||||
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