问题 单项选择题

关于开放性骨折清创术,下列哪项是错误的

A.对仍有血液供应的皮肤,只切除1~2mm污染区

B.若皮肤剥离广泛,应将表面皮肤切开,暴露皮下创腔或隧道

C.彻底切除失去活力的筋膜、肌肉和肌腱

D.彻底清除大小游离碎骨片

E.保留与骨膜及软组织有联系的小骨片

答案

参考答案:D

解析:去除所有游离骨块易致骨质缺损。处理开放性骨折应该根据污染情况、骨块大小、复位情况等综合衡量骨块处置方式。

单项选择题

Passage oneLong bus rides are like television shows .They have a beginning ,a Middle and an end –with commercials thrown in every three or four minutes .The commercials are unavoidable .They happen whether you want them or not .Every couple of minutes a billboard glides by outside the bus window . “buy super clean toothpaste”. “Drink Good’n Wet Root Beer .””Fill up with Pacific Gas .”Only if you sleep ,which site equal to turning the television set off ,are you spared the unending cry of “You Need It ! Buy It Now !” The beginning of the ride is comfortable and somewhat exciting ,Even if you’ve traveled that way before .usually some things have changed-new houses ,new buildings ,sometimes even a new road .The bus driver has a style of driving and it’s fun to try to figure it out the first hour or so . If the driver is particularly reckless or daring ,the ride can be an thrilling as a suspense story .Will the driver pass the truck in time Will the driver move into the right or the left –hand lane After a while,of course,the excitement dies down .sleeping for a while helps pass the middle hours of the ride .Food always makes bus rides more interesting .But you’ve got to be careful of what kind of foodyou eat .Too much salty food can make you very thirsty between stops. The end of the ride is somewhat like the beginning .You know it will soon be over and there’s a kind of expectation and excitement in that .The seat ,of course ,has become harder as the hours have passed.By now you’ve sat with you legs crossed ,with your hands crossed behind your head .the end comes just at the right time . There are just no more ways to sit.

The writer feels long bus rides are like TV shows because ( )

A.the commercials both on TV shows and on billboards along the road are fun

B.they both have a beginning ,a middle ,and an end , with commercials in between

C.the drives are always reckless on TV shows just as they are on buses

D.both travelling and watching TV are not exciting

单项选择题