[单项选择]28岁经产妇，足月产后第2日，患者诉阵发性下腹痛，阴道流血量不多，无恶心、呕吐，无腹泻及便秘。检查宫底脐下2指，无压痛，腹部不胀。
可能的诊断为
A. 急性腹膜炎
B. 肠梗阻
C. 产后宫缩痛
D. 肠痉挛
E. 盆腔炎

An Eye-Witness Account of a Traffic Accident
My name is Li Ming. I am studying at college. A week ago I saw a traffic accident, which is still vivid in my mind.
It was at about I:00 on Saturday morning, June AEth, when I went out of the university to visit a friend of mine at another university. I was walking leisurely on the sidewalk when I heard a loud crash of two vehicles just at the T-junction about A0 meters away. Two taxis crashed together. It was a tragic accident.
I went up and found that the two taxis were badly damaged. Both hoofs were out of shape. One door of a car was knocked off and lying on the road. One driver was blooding and another was shut in the taxi. Some people were trying to help the driver get out of the damaged car. One man was calling to the traffic policeman station. A lot of cars were jammed on the road.
From the stopping track on the road, it is clear that the two taxis were driving too fast. But it is just one of the reasons. In my opinion, the taxi drivers are eager to take more passengers and make a little more money. On the other hand, both drivers don’t show concern for one another. Both of them wanted to run in front of another. Therefore, the accident is inevitable. So far, we should let the drivers keep it in their mind that a little slower, a little safer. Taking care of other’s lives means taking care of your own life.