问题
单项选择题 A1/A2型题
下列关于连续辐射的叙述，错误的是（）
A.高速电子与内层轨道电子作用产生
B.能量取决于电子接近核的情况
C.与标识辐射共同构成X线谱
D.其能量取决于电子能量大小
E.能量与核电荷的大小有关
答案
参考答案：A
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下列关于连续辐射的叙述，错误的是（）
A.高速电子与内层轨道电子作用产生
B.能量取决于电子接近核的情况
C.与标识辐射共同构成X线谱
D.其能量取决于电子能量大小
E.能量与核电荷的大小有关
参考答案：A
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| New York, London, Paris and other big cities are interesting places to live in. There are 1 interesting things to see and to do. You can go to 2 kinds of museums, plays and films. You can also go shopping to 3 things from all over the world. But there are serious 4 in big cities, too. The cost of living is 5 , and there are too many people in some places of the big cities. Every year many people move to the cities because they 6 to find work there, to study at good schools, and to get good medical care. But 7 these people can't find work or a good place to live in. Also too many people in a small place make it 8 to keep the cities 9 and clean. Some people enjoy living in big cities, others do not. 10 people move to a big city, they should think about the problem of living there. | ||||
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