经常账户

阅读下列图文材料。

材料一 以下是希腊出土的刻有人名的陶片

材料二 下图为雅典瓶画：陶片放逐法实施的一个片断——点票

材料三 铁米斯托克里为公元前5世纪雅典著名政客，是希腊联军战胜波斯第三次入侵的关键人物。史书记载他曾被放逐。美国考古学家在对雅典遗址的发掘中，发现刻有他名字的陶片有190枚，根据字迹辨认是14人刻写。请回答：（1）“陶片放逐法”是哪一重要改革的措施？它的实施有何重要意义？___________________________________________________________________________________________（2）结合材料一、二你可以得出的主要结论是什么？___________________________________________________________________________________________（3）根据材料三，你怎样评价“陶片放逐法”？___________________________________________________________________________________________

下列有关碱金属的叙述正确的是  （  ）

A．碱金属单质和氧气反应时都会生成同类产物

B．碱金属单质的硬度都较大

C．液态的钠可用作核反应堆的传热介质

D．碱金属单质都是银白色的固体

航路图中每个航段上应标注：航路代号、磁航线角（双向）、（）。

A.距离和最低安全高度

B.航向和距离

C.距离和气压

D.气压和航向

If you often feel tired and the doctor can’t find anything wrong with you, you may be in a state of Subhealth (亚健康). Subhealth is a state between health and illness. Most of the subhealthy people are middle-aged ones who are usually stressed out because of work and family. And some of them are students who are having exams.
If you are subheahlty, it is not difficult for you to become well soon. You should have good living habits. For example, you should get up early and go to bed early. And you should exercise regularly. Exercising can keep you healthy. As for meals, it is better to eat less salt and sugar. Vegetables, fruit and fish are important to your body. You should eat more of them. It is not good to eat too much at one meal, because it may cause unhealthy changes in the digestive tract(消化道). And at last, a balanced diet is very helpful in staying away from subhealth.

According to the passage, who will probably be subhealthy

A. Teachers and students.
B. Parents and children.
C. Middle-aged people and students.
D. The young and the old.

病灶呈类圆形，位于鞍内，在MRI的T1加权像上呈等低混合信号，有不规则强化。首先考虑的诊断是（）

A.蛛网膜囊肿

B.Rathke囊肿

C.胶样囊肿

D.囊性颅咽管瘤

E.囊性垂体瘤