问题 单项选择题 B型题

上、下侧凸为代偿()。

A.长期不治疗脊柱侧凸

B.不可逆性侧凸

C.S状脊柱侧凸

D.可逆性脊柱侧凸

E.脊柱侧凸已稳定

答案

参考答案:C

解析:确定脊柱侧凸是否稳定,一般根据X线检查。16岁时髂骨翼上骨骺连接成帽形,即示脊柱侧凸已达到稳定期,否则为不稳定期。手术治疗时间应于稳定期后。脊柱侧凸典型X线正位片显示三个侧凸,亦称S状畸形,中间侧凸为原发,上、下侧凸为代偿。长期不治疗侧凸,可有神经压迫症状;可逆性侧凸以单方向为主;侧凸稳定后畸形不为体位而变。

单项选择题
阅读理解

Can animals be made to work for us? Some scientists think that one day animals may be taught to do a number of simple jobs. They say that in a film or on TV .We may see elephants, or monkeys, dogs, bears, or other animals doing a lot of things. If you watch carefully, you may find that those animals are always given something to eat in return(作为回报) for doing them. The scientists say that many different animals may be taught to do a number of simple jobs if they know they will get something to eat in return.

Of course, as we know, dogs can be used to guard a house, and elephants can be used to do some heavy jobs. And we can also teach animals to work in factories. Apes(猿猴), for example, have been used in America to help make cars and scientists believe that these large monkeys may one day get in crops(收割庄稼) and even drive trains.

小题1:Elephant scan be used to do some heavy jobs because ____.

A. they can eat a lot   B. they are very heavy, too    C. they are very strong

小题2:Dogs can be used to guard a house for his host because ____.

A. they are good at running    B. they are very kind and friendly to people

C. they are brave enough to get the strangers(陌生人)and thieves away from the house

小题3:Many different animals may be taught to do some simple jobs if ____.

A. they have enough food to eat

B. if they are sent to school

C. they learn they will get something to eat in return after doing them

小题4:____ can be trained to work for us.

A. Only a few animals       B. A lot of animals        C. Few animals

小题5:Many scientists are working hard to ____.

A. make monkeys get in crops and drive trains

B. make monkeys guard houses like dogs

C. make bears get in crops