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问题 单项选择题

WLAN系统架设中天线的选择：在开阔地可以选择（）天线。

A.定向

B.全向

C.180°

D.90°

答案

参考答案：B

阅读理解
阅读理解。
        配对阅读.左栏是对5个人所需要的书的描述,右栏是8本书的书名,请你为每个人推荐最合适的一本书.
( )1.Nancy wants to learn more about computers. Because people     write to, and even talk to each other on the computer today.
(     )2.Mary is a good mother. She believes eating the right food is
important. She likes to help her children grow better by eating the right
food.
(     )3.Kevin often sits at his desk, studying all night, but he still gets poor grades. He hopes to do better in the tests.
(     )4.Bob's sister wants him to move to New York. But he isn't sure if
that is a good idea. He needs to know more about the country.
(     )5.Army is worried that there are too many used bags. She doesn't
know how to do with(处理) them.		The following is the list of some books:
A. How to Be Good Learners.
B. Make the Waste Useful.
C. Around the World in Eighty Days.
D. You Are What You Eat.
E. Chicken Run.
F. How to Use the Internet.
G. 101 Q & A about America. H. Harvard Girl-Liu Yiting.
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单项选择题 案例分析题

男性，45岁。腰痛多年，时轻时重，伴双下肢痛。10天前搬重物后腰腿痛加剧，并出现麻木与排尿困难。查体：腰运动受限，椎旁压痛向下肢放散，马鞍区痛觉减退。直腿抬高与加强试验阳性。

最需要鉴别的疾病是（）

A.腰扭伤

B.腰椎管狭窄症

C.第3腰椎横突综合征

D.椎管内肿瘤

E.强直性脊柱炎
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