问题
单项选择题
儿童时期病理性骨折最常见的原因是（）
A.骨囊肿
B.转移性骨瘤
C.废用性骨萎缩
D.佝偻病
E.成骨不全
答案
参考答案：A
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儿童时期病理性骨折最常见的原因是（）
A.骨囊肿
B.转移性骨瘤
C.废用性骨萎缩
D.佝偻病
E.成骨不全
参考答案：A
Mrs Smith has three children, Peter, Jenny and Linda. Jenny is the oldest and Linda is the youngest. Peter is in the , but he is the tallest one. Peter is very , so he is on a diet(节食). He tries not to too much meat. He also every day. He runs every day. Now Peter is becoming thinner and stronger. Jenny is a . Maybe she is the busiest person in the family. She rests(休息) at home and her family can often see her reporting news TV. As a housewife, Mrs Smith is the in the family. she can do everything she likes. she likes both and taking pictures . she often shows the pictures of the delicious food she cooks on her blog(博客). She has a lot of fans.
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