问题 单项选择题 共用题干题

患者男性,59岁,因“突发眩晕伴恶心、呕吐3小时”就诊,晨起后突然感到眩晕和身体不稳,伴恶心、呕吐,平躺休息后1分钟左右可自行缓解,翻身时再次引起眩晕发作,无耳鸣耳聋。查体:意识清,精神差,头位变化时可诱发头晕,伴水平眼震,无听力障碍,余脑神经检查未见明显阳性体征,四肢肌力5级,双侧指鼻试验阴性,跟膝胫试验阴性,病理反射未引出。颅脑MRI未见异常。

其最主要的病因是()

A.椎-基底动脉供血不足

B.脱落的耳石颗粒进入半规管

C.上半规管弓上隆起存在骨裂

D.内淋巴水肿

E.经血液循环或邻近组织感染内耳

答案

参考答案:B

阅读理解
根据短文内容,完成表格。
     My name is Jane. My job is to write stories and newsletters for a magazine. I love traveling
and hope to visit Great Britain one day. I'd like a pen pal from London, who is interested in
discussing the differences between Europe and Asia. I love listening to pop music and playing
football.
     I am Manuel. I'm a businessman and have a large company with many workers and clerks.
I would like to find a pen pal who is also a businessman and lives in North America. I like
using the Internet.
     I am working in a university. I speak English, French and Russian. My family name is Jackson
but my students usually call me Sarah. I'd like a pen pal who is interested in language learning
working in Oxford University. I don't like using computers for learning and I believe that true
language learning can only happen in a classroom. 
    I am Peter and interested in the differences between East Europe and North America. I love riding
my horse Jackie and listening  to jazz. I usually get up at 7 o'clock and go to school around 7:30 in
the morning. I want to find a pen pal who has the same interest as me living in Sydney. 
    Cindy is my first name. I am working in a travel agency. Sometimes I am called Mr Guide as I am
working. I'd like to find a pen pal who comes from Europe. I like playing the piano and listening to
jazz. I am interested in history, but I don't like discussing languages.
First name What to do Likes Pen-pal from
Jane 1.______Travelling, pop music, and playing football London
Manuel Businessman Using 2.______ North America
3._____Teacher Teaching Oxford University
Peter Student Riding his horse and listening to jazz 4.______
Cindy5.______Playing the piano, listening to jazz, history Europe
判断题