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患者男，34岁，因车祸致盆部疼痛、活动受限半天入院。拍X线片及CT检查结果如下图：

 

本病例骶骨骨折按Dennis分型，应归为（）。

A.Ⅰ区

B.Ⅱ区

C.Ⅲ区

D.Ⅳ区

E.Ⅴ区

F.Ⅵ区

答案

参考答案：B

写作题

阅读下面短文，并借助连环图和上下文补充所缺信息。每个空只能填写一个形式正确、意义相符的单词。

Yesterday morning an old woman 小题1: a lot of things in a shop．She put   小题2:  into a big box ．She was going to carry it to the   小题3:  ，but the box was heavy and the car wasn't near．At that time Li Ming and Wei Hua were 小题4:  by the car and talking．When they 小题5:  the old woman and the big box beside her，they 小题6:  to help．They lifted the heavy box and 小题7:  it to the car．Suddenly the box __小题8:  down and one of Li Ming's feet was badly hurt．He had to   小题9:  in bed in the hospital for several days．He was  小题10:  about his lessons．But his friend Wei Hua said，“Don't worry about your lesson . I'll come to help you with your lessons after class every afternoon．”

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选择题

久置的硝酸呈黄色的原因是（　　）

A．硝酸露置在空气中被氧气氧化了

B．硝酸露置在空气中被氮气还原了

C．硝酸见光或受热分解产生的NO2再溶于硝酸中

D．硝酸是强氧化性酸
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