问题 多项选择题

关于臂丛神经()

A.臂丛与大血管伴行

B.臂丛周围有臂丛鞘包裹

C.腋鞘与锁骨下血管周围鞘相通

D.腋鞘血管旁间隙与锁骨下血管旁间隙相通

E.腋鞘注入足量美蓝,可扩散到颈神经丛

答案

参考答案:A, B, C, D, E

阅读理解

阅读理解。

     Long long ago, a donkey(驴)  fell  into a well(井). The animal cried for hours as the farmer tried to

think out what to do.   Finally,   the farmer thought  the  animal was too old and the  well needed to be

covered up anyway, so he decided not to save the donkey.

     The farmer  invited  his neighbours  to help him.   They began  to  shovel(铲)  dirt into the well. The

donkey cried harder.   But a  few minutes later, he became quiet. The farmer looked into the well, and

was surprised by what he saw.

     While every shovelful of dirt hit his back, the donkey  would shake it off and take a step on the new

layer of dirt. As the farmer's neighbours continued to shovel dirt on top of the animal, the donkey would

shake it off and take another step up. Soon the donkey stepped up  out of the well and ran away, to the

surprise of all the neighbours.

     The lesson we get from this story is that if life  shovels  some dirt on us, we must get out the well and

not let it cover us. We must learn to shake it off and take a step up. Each of our troubles is a

stepping-stone(踏脚石). We can get out of the deepest well by never giving up!

1. The farmer is ________________.               

A. careless  

B. kind to the donkey  

C. read to give up the donkey    

D. friendly

2. When we are in trouble, we have to learn from _______ in the story.

A. the farmer  

B. the neighbours  

C. the donkey      

D. all of them

3. the story tells us _____________.

A.never to give up even if we're in great trouble

B.the donkey is a clever animal

C.the man has to be kind to the animal

D.the man is the most cruel(残酷的) animal

单项选择题