问题 单项选择题 B1型题

过敏性结膜炎分泌物的特征是()。

A.黏脓性

B.浆液性

C.黏液性

D.泡沫状

E.血性

答案

参考答案:C

解析:不同类型的结膜炎其分泌物各有特点,是进行临床诊断的重要依据之一,同时也是鉴别的要点。细菌性结膜炎由于上皮的坏死以及中性粒细胞的聚集,连同死亡的细菌混合形成黏脓性分泌物,而过敏性结膜炎由于结膜中杯状细胞的增多,引起黏蛋白分泌增加,分泌物呈黏液状,因此上述两题的正确答案分别是A、C。通过此题的练习,可增强对不同类型结膜炎分泌物特点的记忆,同时初步学习进行鉴别诊断的技巧。

阅读理解

阅读理解。

     Traveling can be a good way to get life experiences. But what will you do if you're a student and don't

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     Pack necessary things: The most important things to take are not always clothes. Remember medicine

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1. Before your trip, the most important thing your should do is to _________.

A. plan ahead

B. read travel books

C. search the Internet

2. The underlined word "websites" means _________.

A. 电子邮箱

B. 网站

C. 旅游指南

3. The writer advises you _________.

A. to share costs with other people

B. to go to the most famous places

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4. According to the passage, _________.

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B. clothes are always the most important things to take

C. it's necessary to take some snacks with you during the trip

5. The main idea of the passage is _________.

A. how to prepare for your trip

B. where to spend your holidays

C. how to save money for your trip

单项选择题