女性，45岁，反复发作性头痛、心悸、恶心3年，发作对面色苍白，血压升高，最高时达240／135mmHg，平时血压正常。
患者住院期间血压一直维持在130～150／80～95mmHg，为帮助该病人确立诊断宜行下列哪项检查（）。
A.酚妥拉明试验
B.胰岛素低血糖试验
C.地塞米松抑制试验
D.胰高血糖素试验
E.螺内酯试验
参考答案：A
| Reading comprehension. |
| The sun is the largest source of light. We know that life on the earth depends on the heat of the sun. But the light of the sun is as necessary to life as its heat. Another important source of light is produced by electric sparks in tubes which has special gases. That is known as indirect light. The light we see directly from the source of light, such as sun, is known as direct light. Laser (激光) is a new kind of light source. It possesses a series of remarkable properties, which makes it a better light source in a number of cases. |
| 1. Which is true in the following? |
[ ] |
| Ａ: The light made by electric sparks in tubes with special gases is called direct light. Ｂ: Sunlight is colourless. Ｃ: Indirect light is sent from the power station and so on. Ｄ: Human beings as well as all animals depend on direct light. |
| 2. Which is false in the following? |
[ ] |
| Ａ: Sunlight is a kind of direct light. Ｂ: For man sunlight is a much more useful light than any other light. Ｃ: Electric light is more remarkable than laser in research. Ｄ: Actually moonlight comes from the sun. |
| 3. Life on the earth can't live ____. |
[ ] |
| Ａ: with sunlight Ｂ: without sunlight Ｃ: with moonlight Ｄ: without moonlight |
| 4. Laser, as you know, ____. |
[ ] |
| Ａ: has not been widely used. Ｂ: has not been researched Ｃ: is still unknown Ｄ: is less useful than any other light |
| 5. The word "source" means ____. |
[ ] |
| Ａ: 源 Ｂ: 系 Ｃ: 种 Ｄ: 类 |