问题 单项选择题

关于侧入路法下颌神经阻滞的定位下列哪项是正确的()。

A.穿刺点位于下颌骨喙突与颧弓下缘交点,由穿刺点向前方眼窝尖部刺入约4~5cm深度,针尖可触及颌骨后面(针尖过于向前)或触及蝶骨的翼突外侧板的根部(针尖过于向后方),调整针尖方向,直至出现上颌神经支配区域的放散痛,同时回吸无血和脑脊液

B.在眶下缘正下方1cm,鼻正中线外侧3cm处为穿刺点,于眶下孔下缘进针,穿刺针指向外、上、后方,进针1~1.5cm即可进入眶下孔,刺中眶下神经时,可出现由鼻翼向上唇的放散痛

C.颧弓下缘中点,穿刺针与皮肤成直角刺入约4.0~4.5cm,触及蝶骨的翼突外侧板,将针退至皮下,对准原接触点后方0.5cm和稍上方5cm左右即可出现向下颌和牙龈部的异感,回吸无血和脑脊液回流,证明穿刺到位

D.穿刺点位于外耳孔前3cm,颧弓下缘中点,穿刺针与皮肤成直角刺入约4.5~5cm,上唇、牙龈和颊部出现放散痛,回吸无血和脑脊液回流,证明穿刺到位

E.穿刺点位于外耳孔前3cm,颧弓下缘中点,穿刺针对准同侧瞳孔方向进针1~1.5cm,针尖进入翼腭窝时,上唇、牙龈和颊部出现放散痛,回吸无血和脑脊液回流,证明穿刺到位

答案

参考答案:C

阅读理解

Weddings are quite different——from nation to nation, from area to area, and from the past to the present. However, all people consider weddings to be important and happy events.

People in the Western world go to church for their weddings, while some tribes(部落) in Africa hold their weddings in the open around a campfire, with much dancing.

In China, weddings are different from those abroad. People in the countryside used to carry the bride in a sedan chair from her parents’ house to her new home. Now sedan chairs are seldom seen. Instead, the bridegroom may take the bride to their own new house by bicycle or by tractor(拖拉机). In the city the bride usually prefers a car, brightly decorated(装饰) with flowers and a Chinese character(汉字) meaning double happiness. However, a wedding dinner is necessary in both the countryside and the city. Relatives(亲戚) and friends who are invited to the dinner usually drink to the happiness of the bride and bridegroom.

小题1:What do people all over the world think of weddings?

A.interesting and easy

B.important and fun

C.happy and important

D.interesting and happy小题2:What’s the English for “大花轿” in the passage?

A.a bride

B.a bridegroom

C.a sedan chair

D.a church小题3:Where can the wedding be held in the open air in the world after you read the passage?

A.In China

B.In Western countries

C.In the countryside

D.In Africa小题4:According to the passage, how many ways can the bridegroom usually take the bride to their new home now?

A.2

B.3

C.4

D.5小题5:What’s the main idea of the passage?

A.Introduce the Western weddings.

B.Introduce the African weddings.

C.introduce the Chinese weddings.

D.Introduce different weddings.

判断题