| 男性患者，48岁，以“突然剧烈头痛，伴恶心、呕吐 1h”来诊。1h前看足球赛时突然剧烈头痛伴恶心、呕吐数次，无抽搐，无意识障碍。既往健康。查体：体温 36.5℃，脉搏80/min，呼吸20/min，血压120/ 75mmHg，意识清楚，能正确回答问题，左侧眼睑下垂，左侧瞳孔直径5.0mm，右侧瞳孔直径3.0mm，左侧光反射消失，左侧眼球处于外展位，眼球向内、向上、向下运动不能，余脑神经未见异常，四肢无瘫痪，颈强直。 CT显示脑池内高密度影。 |
病人最可能的诊断是
A．脑出血
B．脑血栓形成
C．脑栓塞
D．蛛网膜下腔出血
E．腔隙性脑梗死
参考答案：D
| 阅读理解。 | ||||||||||||
| All living things on the earth need other living things to live. Nothing lives alone. Most animals must live in a group, and even a plant grows close together with others of the same kind. Sometimes one living thing kills another, one eats and the other is eaten. Each kind of life eats another kind of life in order to live, and together they form a food chain (链条). Some food chains are simple, while others are not. But all food chains begin with the sun, and all food chains become broken up if one of the links disappears. All life needs sunlight to live on. But only plants can use sunlight directly. Plants are "factories". They make food from sunlight, water and things in the soil and air. Plants feed all other living things. Animals can only use the sun's energy after it has been changed into food by plants. Some animals feed directly on plants, others eat smaller animals. Meat-eating animals are only eating plants indirectly. What about human beings? We are members of many food chains. We eat rice, vegetables, and fruits and so on. We also eat meat and drink milk. But men often break up the food chains. They kill wild animals. They also make rivers, lakes and seas polluted, when these rivers, lakes and seas are polluted, the fish in them can not be eaten. If men eat the fish, they will get strange diseases. Each form of life is linked to all others. Breaking the links puts all life in danger.
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