肉瘤X线特征（）
A.X线片示：骨端膨胀性溶骨性破坏
B.X线片示：短骨膨胀，有蜂窝状骨吸收区夹杂钙化斑块
C.X线片示：长骨干骺端骨破坏和日光射线现象，有Codman三角
D.X线片示：骨膜板层状或葱皮状反应性骨形成和骨破坏
E.X线片示：自长骨干骺端突出的骨性病损
参考答案：C
解析：长骨干骺端骨破坏和日光射线现象，有Codman三角是骨肉瘤X线特征，其他均不是。
| 完形填空。 | ||||
| Li Ming comes to Jenny's house. Jenny 1 the house 2 Li Ming. Jenny 3 This big room is 4 .We usually watch TV 5 meet our friends here. That's our kitchen. My mom 6 cooks here. She is good at 7 . This is our refrigerator. There is lots of delicious food in it. It helps 8 the food fresh and good. Now let's go to your bedroom. This is your bed! And this way, please. Here is the bathroom. You can 9 here. Do you like our house? I hope you will enjoy 10 here with us!" | ||||
|