数据库管理技术的发展经过人工管理阶段、__________________和数据库阶段。
参考答案:文件系统阶段
阅读短文,用所给动词的适当形式填空,必要时可加助动词或情态动词(10分)
I am John.I am l7 years old,and I live in England.My father works in a horse-riding school.I have been riding since I小题1:________ (be)six.I go horse-riding every Saturday.Now, I can ride quite well.I often小题2:________ (spend)all Saturdays at the riding school.I help to get the horses ready.I also help the new students.
Look,there are some people小题3:_____ (train)horse-riding.The girl named Xinyi小题4:_____ (walk)the horse around(遛马)and getting ready to get onto the horse.She is from China.She looks beautiful.She小题5:_____ (study)here three times.Last time,I helped her move up and down at the same time as the horse.While we were learning how to jump the horse,suddenly she fell off the horse and小题6:_____(hurt)her knees badly.I felt sorry that I小题7:_____(not help)her at that time.I thought she wouldn’t come this Saturday.To my surprise,she came again! What a brave girl! Last month,she小题8:____(invite)to come to England for a fashion show.She said she was glad to have the chance to come here and she enjoyed herself.
Oh,Xinyi is riding towards me.
“Hi,Xinyi! You’re great! I have never seen such a brave girl like you.”
‘Thanks.John! I am leaving for Beijing tomorrow.Thanks for helping me these days.I will never forget the exciting experience.I小题9:________(share)it with my friends.”
“I hope小题10:_____ (meet)you soon.”
病历摘要:患者男,37岁,因右鼻塞伴涕中带血4个月入院,患者4个月前始右鼻塞,为间断性,偶有涕中带血,时有流脓性分泌物,并症状渐渐加重。但发病以来患者无头痛、面部麻木和疼痛,无复视及流泪,张口正常。检查:右侧鼻腔总鼻道可见表面光滑、质中、粉红色肿物,触之不易出血。鼻咽黏膜光滑,未见新生物和黏膜糜烂。颈部未及淋巴结肿大。
假如该肿瘤非目前状态,而是已侵犯颅底,如采用鼻窦进路切除该肿瘤,需注意些什么?()
A.尽量将肿瘤整块切除
B.彻底咬除被肿瘤侵蚀的颅底骨质,直至正常的骨结构为止
C.如发现硬脑膜表面不平、色泽改变应加切除
D.如发现硬脑膜内层粗糟不平、与脑组织粘连者,应予以保留
E.切除怀疑被侵犯的脑膜时,边界应离肿瘤外界至少3mm
F.切除怀疑被侵犯的脑膜时,边界应离肿瘤外界至少3cm
G.根据术中情况,必要时需颞肌筋膜或人造脑膜修复
H.术后发生脑脊液漏可能为硬脑膜缝合覆盖不严密所致