关于蜘蛛痣的概念，下列错误的是（）
A.大小不一
B.多出现在上腔静脉分布区内
C.蜘蛛痣的出现与肝对雌激素的灭活作用减弱有关
D.蜘蛛痣常见于急、慢性肝炎或肝硬化
E.体检发现蜘蛛痣便可诊断肝硬化
参考答案：E
解析：蜘蛛痣为皮肤小动脉末端分支性血管扩张所形成的血管痣，形似蜘蛛。蜘蛛痣和肝掌的发生与体内雌激素水平升高有关，肝病时，对雌激素灭火作用减弱，因此急慢性肝炎、肝硬化患者可出现蜘蛛痣和肝掌。蜘蛛痣大小不等，多出现在上腔静脉分布的区域内，如面颈、手背、上臂、前臂、前胸和肩部等处。
下面是关于Scotland（苏格兰）的简单介绍，请仔细阅读，然后在表格里墙上有关信息，并回答问题。 Scotland lies in the northern part of Britain, with England in the south, the North Sea in the east and the Atlantic Ocean in the west. The country is made up of (由……组成) the mainland and many islands. Tourists come to Scotland from all over the world. The capital of Scotland, Edinburgh, is a popular tourist center. Tourists also come to see Scotland’s beautiful scenery: the Loch Ness Lake, and the Gramplians Mountains, with their highest peak, Ben Nevis (1343m). The most important river in Scotland is the Clyde, which runs through Glasgow. Although Scotland is part of the United Kingdom, it has its own currency（货币）, a separate educational and legal system（法律制度）and its own parliament（国会）. Information Card
|