问题 单项选择题 B型题

神经损伤后,神经功能恢复最差的是()。

A.正中神经

B.桡神经

C.尺神经

D.腓肠神经

E.胫神经

答案

参考答案:C

解析:1.桡神经运动神经纤维比例多,支配肌肉距离短,神经生长再支配速度快,恢复较好。2.单纯皮神经对功能影响不大,其支配区还可以由周围皮神经生长代偿,可以用作神经移植。3.尺神经运动神经纤维比例少,所支配肌肉易萎缩纤维化,最终难以恢复。

阅读理解

A 16-year-old South Dakota boy who became lost while hunting and spent 16 hours alone in the Black Hills National Forest says he was scared but still managed to make a survival plan.

Austin DuVall, of Rapid City, became lost on Nov.3 while hunting with his father. He ran after a deer, and soon found himself alone. “I ran after a deer, but I didn’t get it,” he said. “Then I was really lost.”

He had only his hunting rifle(步枪) and the clothes he was wearing. He had no food or water and had nothing that could help him find his way to safety. “I knew that no one could hear me. I decided to just sleep and get up in the morning and find safety,” he said.

Austin climbed up on a rock and slept through the night. Then he awoke and relied on skills he learned in a hunter safety course. He followed a stream to an occupied cabin. The couple there called his parents and cooked him a breakfast. “ It’s probably one meal I’ll never forget for the rest of my life,” he said.

After DuVall’s disappearance, a lot of emergency officials and more than 100 volunteers went searching for him. “He wasn’t sitting there waiting for someone to come and find him,” said his father, Steve DuVall. “We didn’t find him; he found himself.”

Mike Kintigh, regional supervisor for the Game, Fish & Parks Department, said one or two hunters will go missing each year, but rarely for more than 24 hours. “We’re a little bit unique in the Black Hills as it’s hard to get lost for a very long time. That’s because we’ve got so many roads here compared to the Rocky Mountains,” Kintigh said. “You can certainly spend a very uncomfortable night in the woods like Austin did.”

小题1:After Austin realized he lost his way, he ___.

A.was very nervous but excited

B.cried aloud for help

C.tried to find a safe place

D.decided to sleep in the wild小题2: Who saved Austin according to his father?

A.The couple in the cabin.

B.Emergency officials.

C.Volunteers.

D.Himself.小题3:From what Mike Kintigh said, we learn that _______.

A.if someone gets lost in the Rocky Mountains, it is hard to find a way out

B.too many people go missing in the Black Hills every year

C.the rescue team is skillful enough to find the lost people in less than 24 hours

D.people who are lost in the Black Hills have to spend a night in the woods

单项选择题