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问题 多项选择题

肱骨干中1/3骨折容易出现骨折的延缓或不愈合，原因在于（）。

A.营养动脉的断裂

B.固定的困难

C.骨缺血性坏死

D.易出现断端分离移位

E.神经损伤导致的营养障碍

答案

参考答案：A, D

填空题
短文填词。
     阅读下面短文，根据以下要求：(1)汉语提示；(2)首字母提示；(3)语境提示，在每个空格内填入一个适当的英语单词，并将该词完整地写在右边相对应的横线上。所填单词要求意义准确、拼写正确。

The memory of our schoolhood is so sweet. It is five
years now since I g _____ from No.3 High School. Last
Saturday, the class that I was in____(举行)a get- 
together, which____(花费)use long time to prepare. 
It was indeed not easy to get in___ with everybody 
and set a good time____ all of us. We all enjoyed this 
precious day greatly,___(回想起)the time we spent 
together and the people we were f with. It was a
pity____ some of us were not present as they
had gone____ for further studies, but they called back
or sent greeting____(卡片)from different places. I hope 
all of our classmates really get together next time.

1. _____
2. _____
3. _____
4. _____
5. _____
6. _____
7. _____
8. _____
9. _____
10. _____
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单项选择题

一架飞机以巡航M数从FL410下降到FL270，而后再以FL270处的IAS从FL270下降到FL100。请问在第一和第二段下降角如何变化,假定发动机处于慢车状态，干净构型，忽略空气压缩性的影响。（）

A.第一段下降角增加，第二段下降角保持不变

B.第一段下降角增加，第二段下降角减小

C.第一段下降角保持不变，第二段下降角减小
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