A：正常情况下，组织细胞内的K+浓度与组织液的最接近
B：受到抗原刺激后，B淋巴细胞增殖和分化属于内环境稳态失调
C：寒冷环境中，甲状腺激素分泌增加而血糖浓度和体温保持相对稳定
D：马拉松运动时，人体饮水量增加而抗利尿激素和尿液排出量均减少
阅读理解 The best thing about going to school is learning how to read. Books are great friends. They can help you to learn about anything you want to know. They can go anywhere with you. You can read about animals, faraway places, people, and anything else. Books are written by people called authors(作者). Authors think of things they want to write about. They make a plan for a book and start to write .Some authors write books that give us information(信息)and teach us things. Authors are very important people because they help us learn. Find a good book to read and read every day ,You will enjoy your time with a good book.
日本发展工业的最有利条件是（ ）
一个具有良好意志的人，必须具备良好的自觉性、果断性、自制性、坚韧性。（ ）
班别
高一（1）班
高一（2）班
高一（3）班
人数
3
6
1
若要求从10位同学中选出两位同学介绍学习经验，设其中来自高一（1）班的人数为ξ，求随机变量ξ的分布列及数学期望E（ξ）．
