问题 单项选择题

男,35岁,因服止痛片数片后觉胃痛,今晨排柏油样便400ml来诊。既往无胃病史。首选的检查是()

A.血清胃泌素测定

B.B型超声检查

C.X线胃肠钡餐

D.急诊胃镜检查

E.胃液分析

答案

参考答案:D

解析:有近期服用NSAID史、严重疾病状态或大量饮酒患者,如发生呕血和(或)黑便,应考虑急性糜烂出血性胃炎的可能,确诊有赖急诊胃镜检查。

阅读理解

阅读理解。

                                                         Mapping Your World

     Different forms of maps are appearing. They allow independent travelers to get local knowledge of places

they are visiting, from the official to the unusual. Meanwhile, hi-tech developments are creating new ways for

us to map the world. Here are two of our favorites;

     Green Maps

     Green Maps allows people to share with the world their knowledge of environmentally friendly places and

attractions in the local areas. Users add information with a set of icons (图标, making It easy to read any map,

whatever the nationalities of those who produce it. At present there are over five hundred map projects being

developed in 54 countries Green Maps' advertised idea is "think global, map local". It is a wonderful way of

gaining all sorts of a place, running from community garden to good places of bird watching.

     Green Maps is not specifically intended for travelers. Not all of its maps are online, so it may be necessary

for some users to communicate with producers through the Green Maps website.

     Maps Mashups

     Many people use online maps developed by Google, but not many know about the mashups of them.

Working in a similar way to Green Maps, Maps Mashups allows people to add icons of their own to existing

maps to express a certain topic. The mashups is so called because it combine all the knowledge you could ever

need. It ranges from the extremely useful, such as where all the World. Heritage Site are, to the most bizarre

(古怪的), such as where America's munkest cities are. With the mashups added to the basic Google Maps, a

multi-layered (多层的) map can be created.

1. According to the passage, which of the following is a characteristic of Green Maps?

A. Aiming at environmental protection.

B. Introducing local attractions with icons.

C. Offering advice to independent travelers.

D. Collecting icons worldwide for local maps.

2. Which of the following icons is most probably NOT used in Green Maps?

A.   B.   C.   D.

3. Map Mashups is named with the word "mashups" because _____.

A. it is produced by users all over the world

B. it gathers various kinds of information

C. it shares icons with Green Maps

D. it is a branch of Google Maps

4. What do Green Maps and Map Mashups have in common?

A. They are created by local people.

B. They are environmentally friendly.

C. Users can edit maps on the Internet.

D. Users need to communicate with produces.

判断题