患者，男，38岁，农民。突然发热，伴腹痛、腹泻、疲乏2天，每天_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题 A1/A2型题

患者，男，38岁，农民。突然发热，伴腹痛、腹泻、疲乏2天，每天排大便15次以上。体检：体温39.9℃，心率96次/分，肝脾肋下未扪及，腹软，左下腹压痛，肠鸣音亢进。血常规检查：RBC4.5×10/L,WBC11.5×10/L，Hb135g/L。本病例最可能的诊断是（）

A.细菌性食物中毒

B.急性胃肠炎

C.急性阿米巴痢疾

D.霍乱

E.急性细菌性痢疾

答案

参考答案：E

完形填空

Imagine the situation. You are driving a car along a desert or on a mountain. You have no idea you are. You passed the last house two hours ago. Then your breaks down. It is night and it is cold. You have no mobile phone. What do you do? Well, next time take a with you. This invention may be able to help you. It is a device(装置) which uses satellites to find the user’s position(位置). It can find your position to within 20 metres. A GPS cannot start your car, but at least you will where you are.
GPS, which means Global Positioning System, is a small receiver. It looks like a mobile phone. You can hold it in your hand, or put in your pocket. It is sometimes put into a watch or a . We also find GPS devices in cars, planes, or boats. Some of these devices have electronic , so you know where you are. For example, in a city they can tell you the name of the .

There are parts to the Global Positioning System. The first part is the . You can either hold it in your hand have it fixed into your car, plane, etc. The second part is a group of satellites orbiting the Earth. The receiver contacts at least four of the satellites and calculates(计算) its position. The third part of the system is a network of ground stations. They are all over the world. They the satellites and make sure they are working well.
Some people think that in the future the GPS will be as as the mobile. They are becoming and more and more accurate(精确的). There are also new uses for the GPS. Perhaps they will become like . Everyone will have one and you will never be lost again.

D．mobile phone

C．more expensive

单项选择题

男，37岁，反复腹泻3年，间有脓血便，粪培养阴性，多种抗生素治疗无效，为明确诊断，首选的检查是（）.

A.腹部平片

B.X线胃肠钡餐检查

C.钡剂灌肠造影

D.结肠镜检查

E.腹部CT