问题 单项选择题

下列哪项是骨折的晚期并发症

A.血管损伤

B.神经损伤

C.骨筋膜室综合征

D.创伤性关节炎

E.脂肪栓塞

答案

参考答案:D

解析:血管神经损伤多因骨折端所伤及;骨筋膜室综合征,系骨筋膜室内因骨折血肿、组织水肿使内容物体积增大,或外包扎过紧,局部压迫过大使骨筋膜室体积变小而导致室内压力升高所致;脂肪栓塞见于成人长管状骨(股骨多见)闭合性骨折,髓腔内血肿张力过大,骨髓破坏,脂肪滴进入破裂的静脉窦,栓塞于肺、脑等处而引起,都是早期并发症。创伤性关节炎是关节内骨折、关节面遭到破坏,又未能达到解剖复位,关节面不平整,长期磨损而引起,是晚期并发症。

阅读理解

阅读理解。

                                                 Wetlands! Valuable Resources on the Earth

    There are many wetlands in China and some of them have become the world's important wetlands. The

Chinese Yellow Sea Wetlands are among them. They are in Yancheng, Jiangsu Province. They are home for

many different kinds of animals. The world's largest Milu Deer Nature Reserve is in them. More than 700

Milu deer live freely there. There are not many red-crowned cranes in the world, but every winter you can

see some in the Red-crowned Crane Nature Reserve in the Yellow Sea Wetlands.

    The temperature in the wetlands is usually neither too high nor too low. There us a lot of rain and sunshine,

too. They are really good places for wildlife. Offering (提供) food and home for some special kinds of animals

is not the only reason why we need to protect wetlands. Wetlands are important because they also prevent

flood. But some people want to change the wetlands to make more space for farms and less space for wildlife.

Luckily, more and more people are beginning to realize the importance of wetlands and wildlife. Every year, on

February 2nd, many activities are held to tell people more about wetlands.

1. The Chinese Yellow Sea Wetlands are in the ______ of China. [ ]

A. east

B. south

C. west

D. north

2. Usually the weather in the wetlands is ______. [ ]

A. hot

B. pleasant

C. cold

D. dry

3. The World Wetlands Day is on ______.[ ]

A. April 22

B. June 25

C. February 2

D. March 22

4. We must protect wetlands because ______.[ ]

A. they are home for wildlife

B. they can offer food to animals

C. they can prevent flood

D. all of the above

5. Some people want to change ______ to make more space for farms. [ ]

A. lands

B. world

C. wildlife

D. wetlands

单项选择题 案例分析题