问题
单项选择题 A1/A2型题
体层摄影中选择层间距大小的依据是（）
A.被照体的厚度
B.被照体的深度
C.被照体的密度
D.照射角的大小
E.被检病变的大小
答案
参考答案：E
解析：体层摄影中选择层间距大小的依据是被检病变的大小。
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体层摄影中选择层间距大小的依据是（）
A.被照体的厚度
B.被照体的深度
C.被照体的密度
D.照射角的大小
E.被检病变的大小
参考答案：E
解析：体层摄影中选择层间距大小的依据是被检病变的大小。
What do the people usually do on weekends? Some people like to at home, but others like to go out for a walk or play football. Mr Smith hard in a factory during (在期间) the . On the weekends, he usually the same thing. On Saturday he washes his car and on he goes with his family to a village(村庄) by car. His uncle and aunt a farm there. It isn't a big one, but there is always to do on the farm. The children help with the animals and give them some . Mr and Mrs Smith help in the field(田地). At the end of the day, they are all and Mr Smith's aunt them a big meal.
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