Humans like to live and work in groups. Language is the “cement(胶合剂)”____holds these groups together. Language is part of culture. Culture, in this sense,____ (mean) all those customs, skills, and attitudes that are part of the behavior of a ____ (particularly) group. What you think ____ what you want in life are all affected by the culture of the group in which you ____( raise). Groups of people live in different ways. They may have different skills, organizations, and art forms. Their family life may be completely different from yours.

    Human beings are inventive animals. They can decide to change their cultures in order to meet various ____(situation). Of all living things, human beings are the ____(clever). They can choose ____(live) in many environments and in a wide variety of ways. Only human beings can choose where and how they want to live and then improve the physical environment to help ____(they)realize these choices.

    Acquiring the wisdom to make wise choices ____ (be)the lasting challenge of being human.

某同学进行下列实验操作，回答相关问题：

（1）取30mL纯水，将其加热到T℃时，其中的c（H⁺）=2.0×10^﹣7mol•L^﹣1，则c（OH^﹣）=____ mol•L^﹣1．

（2）冷却恢复到常温后，向纯水中滴入稀硫酸使溶液体积为100mL，此时溶液中的c（H⁺）=5.0×10^﹣4mol•L^﹣1，则此时溶液中的c（OH^﹣）为　____ mol•L^﹣1．

（3）取（2）的溶液20mL，向其中加氨水，至恰好反应完全，则所得溶液中离子浓度的大小关系为　____ ．

（4）取（2）的溶液50mL，用惰性电极进行电解，则阳极的电极反应为____ ，随着电解的进行，溶液的pH将____ （填“增大”、“减小”、“不变”）．

（5）将（2）所剩的溶液，用5.0×10^﹣4 mol•L^﹣1的NaOH溶液中和，需要NaOH溶液的体积为____ mL．

读材料和青藏地区简图、六大板块示意图，完成下列问题．

材料一、2015年4月25日．尼泊尔发生8.1级地霣．截至5月13日，地震至少造成8129人死亡，17866人受伤，对尼泊尔古城也造成巨大的破坏．
材料二、冬虫夏草生长在3800米以上的高原草甸地区，每采集一根虫草，至少会破坏30 平方厘米的草皮．每年5月到6月到藏区挖虫草的人数都超过了20万人，并且不断增加．虫草的物种分布也不容乐观，青海、西藏两省区虫草分布密集区目前产量仅为25年前的10%．原分布密集区中，有40%的地块已经多年未发现虫草生长．